Herbert Bayer, 1928-1931 (taken) 1976 (print), Mannequin Arm, Gelatin silver print, Bassenge Photography Auctions, LL/91357

Blanc & Demilly, 1931, Partie de boules sur les bas-port, Gravure print, KaufmaNelson Vintage Photographs, LL/24935

ringl + pit, 1931, Komol, Gelatin silver print, Metropolitan Museum of Art, LL/61413

ringl + pit, 1931, ringl in Tub, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/117720

Adolf Schneeberger, 1931, Spool Composition, Gelatin silver print, Howard Greenberg Gallery, LL/70909

Albert Bardem, 1931, Agricultural exhibits, 1931, North Carolina State Fair, Raleigh, NC; segregation sign., Photograph, State Archives of North Carolina, LL/117535

Albert Bardem, 1931, Catholic Orphanage, Photograph, State Archives of North Carolina, LL/117496

Albert Bardem, 1931, Downie Bros Circus Trucks, Photograph, State Archives of North Carolina, LL/117495

Alexander Keighley, 1931, The Canal Bridge at Kildwick, Carbon print, Victoria and Albert Museum, LL/125490

Alexander Keighley, 1931, The Wuthering Heights of Emily Bronte's Novel, Carbon print, Victoria and Albert Museum, LL/125489

Alexander Keighley, 1931, Al Fresco Laundry, Ronda, Carbon print, Victoria and Albert Museum, LL/125485

Alexander Keighley, 1931, Witch Wood, Carbon print, Victoria and Albert Museum, LL/125475

Alexander Keighley, 1931, The Village Fountain, Carbon print, Victoria and Albert Museum, LL/125418

Alexander Leventon, 1931, Henry Hadley, Gelatin silver print, Minneapolis Institute of Art - MIA, LL/116144

Alexander Leventon, 1931, Serenity II, Gelatin silver print, Minneapolis Institute of Art - MIA, LL/116138

Alexander Rodchenko, 1931, John Heartfield, Moscow, Gelatin silver print, National Gallery of Canada / Musée des beaux-arts du Canada, LL/6739

Alfred Eisenstaedt, 1931, Teenage Boy and Girl Prepare to throw Javelin, Gelatin silver print, Candace Dwan Gallery, LL/3734

Alfred Eisenstaedt, 1931, Gala Opening at Covent Garden Opera, London, Gelatin silver print, Phillips - New York, LL/81183

Alfred Stieglitz, 1931, New York, from My Window at the Shelton, West, Gelatin silver print, George Eastman Museum, LL/33216

Alfred Stieglitz, 1931, New York, North Towards Squibb Building, Silver print, Swann Galleries - New York, LL/61510

Alfred Stieglitz, 1931, Night - New York, Gelatin silver print, Princeton University Art Museum, LL/7277

Alfred Stieglitz, 1931, Dorothy Norman from behind, Gelatin silver print, Internet - Original source ill-defined, LL/82085

Alfred Stieglitz, 1931, Equivalent, Gelatin silver print, Nelson-Atkins Museum of Art, LL/81550

Alfred Stieglitz, 1931, Equivalent, Gelatin silver print, Art Institute of Chicago, LL/68104

Alma Lavenson, 1931, Glass Circles, Gelatin silver print, Internet - Original source ill-defined, LL/92141

Alma Lavenson, 1931, Chrysanthemum, Gelatin silver print, Nelson-Atkins Museum of Art, LL/81518

Alma Lavenson, 1931, Mooring Ropes., Silver print, Swann Galleries - New York, LL/115075

André Kertész, 1931, Shadows, Gelatin silver print, S K Josefberg Studio (CLOSED - 2004), LL/1309

André Kertész, 1931, Elizabeth and I, Gelatin silver print, Peter Fetterman Gallery, LL/520

André Kertész, 1931, Elizabeth & Andre Kertesz, Paris, Gelatin silver print, Nelson-Atkins Museum of Art, LL/81290

Anton Stankowski, 1931, Mailand, Gelatin silver print, Galerie Zur Stockeregg, LL/4517

Arkadii Shaikhet, 1931, Komsomolec at the steering wheel of paper-making machines. Balakhna, Moscow House of Photography, LL/901

August Sander, 1931, Mary Wigman, Gelatin silver print, Lempertz - Cologne, LL/115970

August Sander, 1931, [The Cologne lawyer Dr. Bysanz (Der Kölner Rechtsanwalt Dr. Bysanz)], Gelatin silver print, J. Paul Getty Museum, LL/116445

August Sander, 1931, [Porter, Munich (Dienstmann, München)], Gelatin silver print, J. Paul Getty Museum, LL/116458

August Sander, 1931, Secretary at West German Radio Station, [People of the 20th Century: Portraits of German Citizens 1910-1940], Gelatin silver print, Kathleen Ewing Gallery, LL/22891

Ben Magid Rabinovitch, 1931, Tamaris in "Dirge", Gelatin silver print, Bassenge Photography Auctions, LL/15769

Berenice Abbott, 1931, Photograph design for a wastebasket, Gelatin silver print, Philadelphia Museum of Art, LL/40654

Berenice Abbott, 1931, Photograph design for a wastebasket, Gelatin silver print, Philadelphia Museum of Art, LL/40655

Berenice Abbott, 1931, Photograph design for a textile, Gelatin silver print, Philadelphia Museum of Art, LL/40653

Betti Mautner, 1931, Portrait, Back of print, Private collection, LL/17977

Betti Mautner, 1931, Portrait, Private collection, LL/17978

Boccasile Gino (artist), 1931, Gevaert - La pellicola delle belle fotografie [Advert for Gevaert Roll-Film], Advertising poster, Museo Collezione Salce, LL/121628

Brassaï, 1931, Self-Portrait in an Opium Den, Gelatin silver print, Bonhams - New York, LL/66307

Brassaï, 1931, Lovers in a Bistro, Rue Saint-Denis, Gelatin silver print, Cleveland Museum of Art, LL/70353

Burton Holmes, 1931, Aerial View of Parking Lot, Los Angeles, California, Photograph, Archive Farms, LL/126111

Charles Sheeler, 1931, Cactus and Photographer's Lamp, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/67902

Dorothea Lange, 1931, John, San Francisco, Edwynn Houk Gallery, LL/5084

Dorothea Lange, 1931, Taos, New Mexico, Gelatin silver print, J. Paul Getty Museum, LL/6029

Editions Braun (publisher), 1931, 219 Group d'Indigenes, [Exposition Coloniale Internationale - Paris 1931], Postcard, Creative Commons - Wikipedia, LL/64419

Editions Braun (publisher), 1931, 255 Chameliers Maures, [Exposition Coloniale Internationale - Paris 1931], Postcard, Creative Commons - Wikipedia, LL/64420

Editions Braun (publisher), 1931, 259 Group de Danseuses Balinaises, [Exposition Coloniale Internationale - Paris 1931], Postcard, Creative Commons - Wikipedia, LL/64421

Edmund Collein (German, 1906-1992), 1931, [Prosit Neujahr!], Gelatin silver print, J. Paul Getty Museum, LL/64646

Edward Quigley, 1931, Photogram (Number 9), Gelatin silver print, Cleveland Museum of Art, LL/70310

Edward Quigley, 1931, Light Abstraction, Gelatin silver print, Nelson-Atkins Museum of Art, LL/81541

Edward Quigley, 1931, Light Abstraction, Gelatin silver print, Nelson-Atkins Museum of Art, LL/81500

Edward Steichen, 1931, George Washington Bridge, New York, Gelatin silver print, Staley+Wise Gallery, LL/5567

Edward Steichen, 1931, Sylvia Sidney, Hollywood, Fahey / Klein Gallery, LL/16507

Edward Steichen, 1931, George Washington Bridge, Gelatin silver print, Sotheby's - Paris, LL/85210

Edward Weston, 1931, Cabbage Leaf, Gelatin silver print, Private collection of Marco C. Antonetto, LL/31111

Edward Weston, 1931, Cabbage Leaf, Oakland Museum of California, LL/16185

Edward Weston, 1931, Cabbage Sprout, Fraenkel Gallery, LL/4283

Edward Weston, 1931, Shell, Gelatin silver print, George Eastman Museum, LL/69929

Edward Weston, 1931, Cabbage Leaf, Gelatin silver print, Lee Gallery, LL/21324

E.O. Hoppé, 1931, Smallest Book at the British Museum, London, Gelatin silver print, E.O. Hoppé Collection, LL/80557

E.O. Hoppé, 1931, Life Class with Nude Model, Royal College of Art, London, Gelatin silver print, E.O. Hoppé Collection, LL/93968

Emmanuel Sougez, 1931, Le château de cartes récompense la patience et la peine, Magazine page, Private collection, LL/123508

Emmanuel Sougez, 1931, Le Fauteuil blanc, Tirage argentique, Bibliothèque Nationale de France, Département des Estampes et de la Photographie, LL/7211

Eva Besnyö, 1931, [A family of musicians near Lake Balaton in Hungary], Gelatin silver print, Private collection of Henri van der Tol, LL/119594

Eva Besnyö, 1931, Self portrait of Eva Besnyö, Gelatin silver print, detail, Rijksmuseum, LL/76978

Ewald Hoinkis, 1931, Abstraction, Gelatin silver print, ferrotyped, Bassenge Photography Auctions, LL/47964

Felix H. Man, 1931, Mussolini in His Study at Palazzo Venezia, Rome, Gelatin silver print, Harry Ransom Humanities Research Center at the University of Texas at Austin, LL/39166

Florence Henri, 1931, Pomme, poire et raisin, Tirage argentique, Bibliothèque Nationale de France, Département des Estampes et de la Photographie, LL/7038

Florence Henri, 1931, Composition (Nature Morte), Gelatin silver print, Internet - Original source ill-defined, LL/91558

Florence Henri, 1931, Composition, Gelatin silver print, Internet - Original source ill-defined, LL/91563

Florence Henri, 1931, Little Boot, Gelatin silver print, Internet - Original source ill-defined, LL/91568

Francis Bruguière, 1931, [English Cathedral Abstraction], Gelatin silver print, J. Paul Getty Museum, LL/75105

Francis Bruguière, 1931, [English Cathedral Abstraction], Gelatin silver print, J. Paul Getty Museum, LL/75090

Francis Bruguière, 1931, Untitled (Cathedral Montage), Gelatin silver print, Philadelphia Museum of Art, LL/71386

Francis Bruguière, 1931, Untitled (Cathedral Montage), Gelatin silver print, Philadelphia Museum of Art, LL/71387

Francis Bruguière, 1931, [English Cathedral Abstraction], Gelatin silver print, J. Paul Getty Museum, LL/75113

François Kollar, 1931, Advertising photograph for Hermes typewriters, Gelatin silver print, Private collection of Fostin Cotchen, LL/125263

François Kollar, 1931, Double-impression of the Eiffel Tower, Gelatin silver print, double, solarized, Swann Galleries - New York, LL/57668

Frantisek Drtikol, 1931, The Soul, Pigment print, Galerie Johannes Faber, LL/1789

Frantisek Drtikol, 1931, Composition, Pigment print, Paul M. Hertzmann, Inc, LL/73814

Frederic E. Ives, 1931, Cactus, Polychrome print, Swann Galleries - New York, LL/42127

Fritz Lang (director), 1931, The murderer spots the young girl (Film still from Fritz Lang, "M", 00:53:20), Film frame, This work is out of copyright, LL/66903

Fritz Lang (director), 1931, Reward poster (Film still from Fritz Lang, "M", 00:05:39), Film frame, This work is out of copyright, LL/66896

Fritz Lang (director), 1931, Young girl reflected in a window display (Film still from Fritz Lang, "M", 00:52:45), Film frame, This work is out of copyright, LL/66902

Fritz Lang (director), 1931, Young girl with the murderer viewed through a toy shop window (Film still from Fritz Lang, "M", 01:03:54), Film frame, This work is out of copyright, LL/66904

Fritz Lang (director), 1931, The murderer played by Peter Lorre (Film still from Fritz Lang, "M", 00:51:26), Film frame, This work is out of copyright, LL/66901

Fritz Lang (director), 1931, The underworld conspire to find the murderer (Film still from Fritz Lang, "M", 00:42:48), Film frame, This work is out of copyright, LL/66900

Fritz Lang (director), 1931, Tools of the underworld (Film still from Fritz Lang, "M", 00:28:41), Film frame, This work is out of copyright, LL/66899

Fritz Lang (director), 1931, Fingerprint analysis (Film still from Fritz Lang, "M", 00:25:56), Film frame, This work is out of copyright, LL/66898

Fritz Lang (director), 1931, Fingerprint analysis (Film still from Fritz Lang, "M", 00:15:58), Film frame, This work is out of copyright, LL/66897

Fritz Lang (director), 1931, Inspector Karl Lohmann (Film still from Fritz Lang, "M", 01:28:23), Film frame, This work is out of copyright, LL/66905

Fritz Lang (director), 1931, The school (Film still from Fritz Lang, "M", 00:04:20), Film frame, This work is out of copyright, LL/66895

Fritz Lang (director), 1931, Title screen (Film still from Fritz Lang "M", 01:24), Film frame, This work is out of copyright, LL/59106

Fritz Lang (director), 1931, A ball thrown by a young girl bounces against a wanted poster for a murderer with the shadow of a hatted man (Film still from Fritz Lang "M", 05:38), Film frame, This work is out of copyright, LL/59107

Fritz Lang (director), 1931, The staircase in an apartment block where a woman waits for her daughter to come home for lunch (Film still from Fritz Lang "M", 00:00), Film frame, This work is out of copyright, LL/59108

Fritz Lang (director), 1931, Feet, a cana and a hat (Film still from Fritz Lang "M", 47:12), Film frame, This work is out of copyright, LL/59109

Fritz Lang (director), 1931, Blind man with his dog (Film still from Fritz Lang "M", 47:13), Film frame, This work is out of copyright, LL/59110

Fritz Lang (director), 1931, Reflections in a window display (Film still from Fritz Lang "M", 52:45), Film frame, This work is out of copyright, LL/59111

Fritz Lang (director), 1931, The policeman (Film still from Fritz Lang "M", 1:28:22), Film frame, This work is out of copyright, LL/59112

G.W. French, 1931, The Newsboy, Gelatin silver print, Bassenge Photography Auctions, LL/47956

George Hurrell, 1931, Joan Crawford, Gelatin silver prints and negatives, Internet - Original source ill-defined, LL/97889

George Platt Lynes, 1931, Serge Lifar dans "Le Spectre de la Rose", Gelatin silver print, Pierre Bergé & Associés, LL/67606

George Platt Lynes, 1931, Serge Lifar dans "Le Spectre de la Rose", Gelatin silver print, Pierre Bergé & Associés, LL/67607

George Platt Lynes, 1931, Serge Lifar dans "Le Spectre de la Rose", Gelatin silver print, Pierre Bergé & Associés, LL/67608

George Platt Lynes, 1931, Serge Lifar dans "Le Spectre de la Rose", Gelatin silver print, Pierre Bergé & Associés, LL/67609

Georgi Zelma, 1931, Moscow, Parachute Tower, Gorki Park, Gelatin silver print, Etherton Gallery, LL/83902

Georgi Zelma, 1931, In Flight, Gelatin silver print, Etherton Gallery, LL/83906

Georgi Zelma, 1931, In Flight, Gelatin silver print, Etherton Gallery, LL/83920

Germaine Krull, 1931, Study, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/116016

Giuseppe Enrie (1886-1961), 1931, Holy Face of the Divine Redeemer (Detail of the Holy Shroud) / Santo volto del Divin Redentore (Particolare della Santissima Sindone), Gelatin silver print, Museum of Fine Arts, Houston (MFAH), LL/112112

György Kepes, 1931, Street Pavers, Berlin, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/114443

H. Lichtenecker, 1931, Taking facial casts, Southwest Africa (Namibia), Film negative, Private collection of Wolfgang Wiggers, LL/103836

H. Lichtenecker, 1931, Taking facial casts, Southwest Africa (Namibia), Film negative, Private collection of Wolfgang Wiggers, LL/103835

H. Lichtenecker, 1931, Taking facial casts, Southwest Africa (Namibia), Film negative, Private collection of Wolfgang Wiggers, LL/103834

H. Lichtenecker, 1931, Taking facial casts, Southwest Africa (Namibia), Film negative, Private collection of Wolfgang Wiggers, LL/103833

Harold Cazneaux, 1931, Bridge, West Circular Quay, Gelatin silver print, Queensland Art Gallery, LL/66671

Harold Cazneaux, 1931, Life class, The Sydney Art School, Gelatin silver print, Art Gallery of New South Wales, LL/80464

Harold Cazneaux, 1931, The surf wheel, Gelatin silver print, Art Gallery of New South Wales, LL/74321

Herbert Bayer, 1931, The Language of Letters, Gelatin silver print, photomontage, Source requested, LL/53961

Herbert Bayer, 1931, Bone Breaker (Viking), Gelatin silver print, Philadelphia Museum of Art, LL/71345

Ilse Bing, 1931, Champs de Mars, Gelatin silver print, Lempertz - Cologne, LL/52117

Ilse Bing, 1931, Untitled (Basket on Pavement, Veere Harbor), Gelatin silver print, Philadelphia Museum of Art, LL/71362

Ilse Bing, 1931, Untitled (Amsterdam), Gelatin silver print, Philadelphia Museum of Art, LL/71361

Ilse Bing, 1931, Flowers in a Vase, Gelatin silver print, Philadelphia Museum of Art, LL/71360

Ilse Bing, 1931, Chair, Champs Elysees, 1931, Gelatin silver print, Silverstein Photography, LL/253

Ilse Bing, 1931, Harbor view, Gelatin silver print, Bassenge Photography Auctions, LL/32494

Ilse Bing, 1931, Cancan Dancer, Moulin-Rouge, Paris, Gelatin silver print, L. Parker Stephenson Photographs, LL/46764

Ilse Bing, 1931, Eiffel Tower, Paris, Gelatin silver print, warm-toned, L. Parker Stephenson Photographs, LL/46765

Imogen Cunningham, 1931, Martha Graham, Platinum print, Camera Obscura Gallery, LL/5279

Imre Kinszki, 1931, Shadow on the Snow, Gelatin silver print, Vintage Galéria, LL/18991

Jacques-Henri Lartigue, 1931, Renée Perle, Paris, Gelatin silver print, Villa Grisebach Auktionen GmbH - Berlin, LL/70707

Jacques-Henri Lartigue, 1931, The Crystal Ball, Gelatin silver print, toned, Cleveland Museum of Art, LL/70347

Jacques-Henri Lartigue, 1931, Renée Perle, Paris, Gelatin silver print, Villa Grisebach Auktionen GmbH - Berlin, LL/70706

Jacques-Henri Lartigue, 1931, Renee Perle, Paris, Gelatin silver print, Silverstein Photography, LL/336

James Van der Zee, 1931, James Tap Dance Team, Gelatin silver print, Bonhams - New York, LL/91717

Jan Lauschmann, 1931, Parked cars, Gelatin silver print, Private collection of Fostin Cotchen, LL/126139

John Heartfield, 1931, The back of So Macht Man Dollars, Photolithograph of a photomontage, Private collection of Fostin Cotchen, LL/129174

José Ortiz-Echagüe, 1931, Remero Vasco 3, Photograph, Ortiz Echagüe Collection - Legado Ortiz Echagüe, LL/116159

José Ortiz-Echagüe, 1931, Basque Oarsman [sp. Remero Vasco], Carbon Fresson print, Ortiz Echagüe Collection - Legado Ortiz Echagüe, LL/6546

Jules Lejeune, 1931, Coin de ferme à Zeebrugge, Bromoil print, AnamorFose, LL/8686

Karl Wessely (German), 1931, No. 29. Hydrophtalmos or Congenital Buphthalmos., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57483

Karl Wessely (German), 1931, No. 29. Hydrophtalmos or Congenital Buphthalmos., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57482

Karl Wessely (German), 1931, No. 21. Senile Ectropion., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57466

Karl Wessely (German), 1931, No. 28. Panophthalmitis., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57481

Karl Wessely (German), 1931, No. 28. Panophthalmitis., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57480

Karl Wessely (German), 1931, No. 27. Polykoria., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57479

Karl Wessely (German), 1931, No. 27. Polykoria., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57478

Karl Wessely (German), 1931, No. 26. Subconjunctival Lipodermoid., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57477

Karl Wessely (German), 1931, No. 19. Facial Lupus with Cicatricial Ectropion., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57462

Karl Wessely (German), 1931, No. 26. Subconjunctival Lipodermoid., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57476

Karl Wessely (German), 1931, No. 25. Chemosis and Exophtalmos on Orbital Periostitis., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57475

Karl Wessely (German), 1931, No. 25. Chemosis and Exophtalmos on Orbital Periostitis., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57474

Karl Wessely (German), 1931, No. 24. Interstitial Keratitis., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57473

Karl Wessely (German), 1931, No. 24. Interstitial Keratitis., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57472

Karl Wessely (German), 1931, No. 23. Epithelioma of the Conjunctiva., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57471

Karl Wessely (German), 1931, No. 23. Epithelioma of the Conjunctiva., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57470

Karl Wessely (German), 1931, No. 22. Pemphigus of the Conjunctiva., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57469

Karl Wessely (German), 1931, No. 22. Pemphigus of the Conjunctiva., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57468

Karl Wessely (German), 1931, No. 21. Senile Ectropion., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57467

Karl Wessely (German), 1931, No. 20. Dislocation of the Globe., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57465

Karl Wessely (German), 1931, No. 20. Dislocation of the Globe., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57464

Karl Wessely (German), 1931, No. 19. Facial Lupus with Cicatricial Ectropion., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57463

Karl Wessely (German), 1931, No. 35. Melano-Sarcoma of the Choroid., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57495

Karl Wessely (German), 1931, No. 40. Vaccinia of the Lids., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57505

Karl Wessely (German), 1931, No. 40. Vaccinia of the Lids., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57504

Karl Wessely (German), 1931, No. 39. Metallic Foreign Body in the Anterior Chamber., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57503

Karl Wessely (German), 1931, No. 39. Metallic Foreign Body in the Anterior Chamber., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57502

Karl Wessely (German), 1931, No. 38. Luxation of a Calcified Lens into the Anterior Chamber., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57501

Karl Wessely (German), 1931, No. 38. Luxation of a Calcified Lens into the Anterior Chamber., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57500

Karl Wessely (German), 1931, No. 37. Zonular Cataract., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57499

Karl Wessely (German), 1931, No. 37. Zonular Cataract., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57498

Karl Wessely (German), 1931, No. 36. Tuberculous Iritis., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57497

Karl Wessely (German), 1931, No. 36. Tuberculous Iritis., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57496

Karl Wessely (German), 1931, No. 30. Sarcoma of the Choroid broken through., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57484

Karl Wessely (German), 1931, No. 35. Melano-Sarcoma of the Choroid., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57494

Karl Wessely (German), 1931, No. 34. Xerophthalmus - following Trachoma., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57493

Karl Wessely (German), 1931, No. 34. Xerophthalmus - following Trachoma., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57492

Karl Wessely (German), 1931, No. 33. Lacrimal Fistula following injury to the Skull., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57491

Karl Wessely (German), 1931, No. 33. Lacrimal Fistula following injury to the Skull., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57490

Karl Wessely (German), 1931, No. 32. Epithelial Tumor of the Limbus., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57489

Karl Wessely (German), 1931, No. 32. Epithelial Tumor of the Limbus., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57488

Karl Wessely (German), 1931, No. 31. Pterygium., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57487

Karl Wessely (German), 1931, No. 31. Pterygium., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57486

Karl Wessely (German), 1931, No. 30. Sarcoma of the Choroid broken through., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57485

Karl Wessely (German), 1931, No. 18. Splinter of Iron in the Iris., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57460

Karl Wessely (German), 1931, No. 11. Mottled Iris. Mild Squamous Blepharitis., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57446

Karl Wessely (German), 1931, No. 11. Mottled Iris. Mild Squamous Blepharitis., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57447

Karl Wessely (German), 1931, No. 12. Phlyctenular Conjunctivitis., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57448

Karl Wessely (German), 1931, No. 12. Phlyctenular Conjunctivitis., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57449

Karl Wessely (German), 1931, No. 13. Epi-bulbar Dermoid., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57450

Karl Wessely (German), 1931, No. 13. Epi-bulbar Dermoid., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57451

Karl Wessely (German), 1931, No. 14. Anterior Scleral Staphyloma., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57452

Karl Wessely (German), 1931, No. 14. Anterior Scleral Staphyloma., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57453

Karl Wessely (German), 1931, No. 15. Fistula of Tear Sac., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57455

Karl Wessely (German), 1931, No. 16. Ulcus Serpens., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57456

Karl Wessely (German), 1931, No. 16. Ulcus Serpens., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57457

Karl Wessely (German), 1931, No. 18. Splinter of Iron in the Iris., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57461

Karl Wessely (German), 1931, No. 17. Ulcus Serpens after Cauterization with Steam., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57458

Karl Wessely (German), 1931, No. 17. Ulcus Serpens after Cauterization with Steam., [Eye conditions and injuries], Stereophoto, colour, back, Private collection of Jacek Dehnel, LL/57459

Karl Wessely (German), 1931, No. 15. Fistula of Tear Sac., [Eye conditions and injuries], Stereophoto, colour, Private collection of Jacek Dehnel, LL/57454

Khalil Raad, 1931, From the right: Georges Raad, Ruth Raad and Aida Krikorian. Palestine / Jerusalem, Print, hand-coloured, Arab Image Foundation, LL/20153

Kurt Kranz, 1931, Versinkende (Sinking one), Photomontage, Internet - Original source ill-defined, LL/113874

Kurt Kranz, 1931, Selbstporträt en face (objektives Foto) (Self-portrait with face (objective photo)), Gelatin silver print, Internet - Original source ill-defined, LL/113875

Kurt Kranz, 1931, Studien, Gelatin silver prints (3), mounted, Lempertz - Cologne, LL/83316

Kurt Kranz, 1931, Mund-Reihen (Mouth rows), Gelatin silver print, Internet - Original source ill-defined, LL/113873

Kurt Kranz, 1931, Augenreihe (Eye rows), Gelatin silver print, Internet - Original source ill-defined, LL/113871

Kurt Kranz, 1931, Augenreihe (Eye rows), Gelatin silver print, Internet - Original source ill-defined, LL/113870

Ladislav Emil Berka, 1931, Mistletoe [Prague], Gelatin silver print, Galerie Johannes Faber, LL/1787

Ladislav Emil Berka, 1931, Untitled (Window display), Gelatin silver print, Villa Grisebach Auktionen GmbH - Berlin, LL/55937

Laure Albin-Guillot, 1931, Cartilages de baleine, [Micrographie décorative, planche VI], Heliogravure, Ader Nordmann, LL/93807

Laure Albin-Guillot, 1931, [Untitled], [Micrographie décorative], Heliogravure originale, Photo Verdeau, LL/7986

Laure Albin-Guillot, 1931, [Untitled], [Micrographie décorative], Héliogravure originale métallisée, Photo Verdeau, LL/7987

Laure Albin-Guillot, 1931, [Untitled], [Micrographie décorative], Héliogravure originale métallisée, Photo Verdeau, LL/7988

Laure Albin-Guillot, 1931, [Untitled], [Micrographie décorative], Héliogravure originale, Photo Verdeau, LL/7989

Laure Albin-Guillot, 1931, Nu, Assia, Silver print, Sotheby's - Paris, LL/50902

Laure Albin-Guillot, 1931, Diatomée., [Micrographie décorative, planche XVI], Heliogravure, Ader Nordmann, LL/93808

Laure Albin-Guillot, 1931, Diatomée., [Micrographie décorative, planche XVIII], Heliogravure, Ader Nordmann, LL/93809

Laure Albin-Guillot, 1931, Acide urique du ruminant., [Micrographie décorative, planche XX], Heliogravure, Ader Nordmann, LL/93810

Lee Miller, 1931, Untitled (Woman with Hand in Hair), Gelatin silver print, New Orleans Museum of Art (NOMA), LL/82132

Lewis W. Hine, 1931, Empire State Building, [Empire State Building], Silver contact print, Swann Galleries - New York, LL/19262

Lewis W. Hine, 1931, Topping the Mast, Gelatin silver print, Galerie Zur Stockeregg, LL/4480

Lewis W. Hine, 1931, Construction worker maneuvering rope and pulley, Empire State Building, Gelatin silver print, Swann Galleries - New York, LL/55655

Lewis W. Hine, 1931, High up on the Empire State Building, two construction workers attaching a beam, Silver contact print, Swann Galleries - New York, LL/66181

Lewis W. Hine, 1931, Workers on the Empire State Building, Gelatin silver print, Swann Galleries - New York, LL/55656

Lewis W. Hine, 1931, Empire State Building, New York, Gelatin silver print, J. Paul Getty Museum, LL/50543

Lucienne Bloch, 1931, Frida at the Barbizon Plaza Hotel, New York City, Barry Singer Gallery, LL/2813

Man Ray, 1931, Cuisine, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72069

Man Ray, 1931, Untitled, Gelatin silver print, Lempertz - Cologne, LL/62812

Man Ray, 1931, Lingerie, Gelatin silver print, Metropolitan Museum of Art, LL/78182

Man Ray, 1931, Composition classique, Gelatin silver print, Internet - Original source ill-defined, LL/75875

Man Ray, 1931, Le monde (The World), [Electricite], Photogravure, J. Paul Getty Museum, LL/43315

Man Ray, 1931, Lee Miller, Gelatin silver print, Beetles + Huxley, LL/56380

Man Ray, 1931, La Ville, [Electicite], Photogravure, Private collection of Jeff Nolte, LL/123049

Man Ray, 1931, L'oeuf et le coquillage, Gelatin silver print, Bassenge Photography Auctions, LL/94845

Man Ray, 1931, Solarized Portrait of Mary Gill, Gelatin silver print, Edwynn Houk Gallery, LL/5078

Man Ray, 1931, Untitled, [Electricité], Photogravure, Swann Galleries - New York, LL/43334

Man Ray, 1931, Breeze (Le Souffle), [Electricité], Photogravure, J. Paul Getty Museum, LL/43684

Man Ray, 1931, Salle De Bain, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72101

Man Ray, 1931, Salle à Manger, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72100

Man Ray, 1931, Le Souffle (Breeze) / The Fan, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72087

Man Ray, 1931, Electricité, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72071

Man Ray, 1931, Planche 7 du portfolio de Pierre Bost et Man Ray Electricité : 10 rayogrammes. Paris, Compagnie parisienne de distribution d'électricité,, Tirage argentique, Bibliothèque Nationale de France, Département des Estampes et de la Photographie, LL/7040

Man Ray, 1931, Le Monde, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72086

Man Ray, 1931, Electricité, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72072

Man Ray, 1931, The Egg and the Shell, Gelatin silver print, solarized, Fahey / Klein Gallery, LL/4822

Man Ray, 1931, La Maison, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72084

Man Ray, 1931, La Ville, [Électricité], Photogravure, Philadelphia Museum of Art, LL/72085

Man Ray, 1931, La Ville, Photogravure, Archive Farms, LL/111202

Manuel Álvarez Bravo, 1931, Instrumental, Gelatin silver print, Asociación Manuel Álvarez Bravo AC, LL/29649

Manuel Álvarez Bravo, 1931, Tamayo's Hands, Gelatin silver print, Dreweatts & Bloomsbury (Bloomsbury), LL/69535

Manuel Álvarez Bravo, 1931, El Ensueno (the Daydream), Gelatin silver print, Etherton Gallery, LL/22118

Manuel Álvarez Bravo, 1931, Optical Parable, Gelatin silver print, J. Paul Getty Museum, LL/6051

Manuel Álvarez Bravo, 1931, Ladder of Ladders, Gelatin silver print, Cleveland Museum of Art, LL/94104

Margaret Bourke-White, 1931, World's Largest Blast Furnace, Magnitogorsk, Russia, Gelatin silver print, warm-toned, Swann Galleries - New York, LL/55672

Margaret Bourke-White, 1931, Soviet Serenade, Silver print, Swann Galleries - New York, LL/19265

Margaret Bourke-White, 1931, U.S.S. Airship Akron, Gelatin silver print, warm-toned, framed, Swann Galleries - New York, LL/43870

Margaret Bourke-White, 1931, World's Largest Blast Furnace, Magnitogorsk, Russia, Gelatin silver print, warm-toned, Swann Galleries - New York, LL/46960

Margaret Bourke-White, 1931, Organ Pipes, Library of Congress, Prints and Photographs Division, LL/15535

Margaret Watkins, 1931, Self-Portrait, Paris, Gelatin silver print, contact print, Christie's - London, LL/24271

Maurice Tabard, 1931, Still-Life, Gelatin silver print, Swann Galleries - New York, LL/25436

Maurice Tabard, 1931, Nature Morte, Silver print, Swann Galleries - New York, LL/31241

Maurice Tabard, 1931, Lettres Peignot, Gelatin silver print, Ader Nordmann, LL/62396

Maurice Tabard, 1931, "Nature Morte", Gelatin silver print, Villa Grisebach Auktionen GmbH - Berlin, LL/94765

Maurice Tabard, 1931, Nature Morte, Gelatin silver print, Christie's - New York, LL/23794

Max Ernst, 1931, Mr. Knife, Miss Fork, Cliché-verre, Private collection, LL/33202

Michael Dlugach, 1931, Design for a propaganda poster, Gelatin silver print, combined with magazine page and drawn on with white paint, Bassenge Photography Auctions, LL/47951

Nickolas Muray, 1931, Anna May Wong, Color print, assembly (Carbro) process, George Eastman Museum, LL/7255

Nickolas Muray, 1931, Camel Cigarettes, 3 in Red, Color print, assembly (Carbro) process, George Eastman Museum, LL/30800

Oscar Graubner, 1931, Margaret Bourke-White on the Chrysler Building, Gelatin silver print, LIFE, LL/32153

Paul Strand, 1931, Church, Ranchos de Taos, New Mexico, Gelatin silver print, Saint Louis Art Museum, LL/37261

Paul Strand, 1931, Church, Rancho de Taos, New Mexico, Platinum print, Cleveland Museum of Art, LL/70206

Paul Strand, 1931, Elizabethtown, New Mexico, Gelatin silver print, Cleveland Museum of Art, LL/70209

Piero Boccardi, 1931, From light to darkness, Photograph, Internet - Original source ill-defined, LL/65567

Raoul Hausmann, 1931, Ihre Tochter, Gelatin silver print, mounted on cardboard, Galerie Priska Pasquer, LL/1691

Robert Capa, 1931, Leon Trotsky, Copenhagen, Gelatin silver print, Source requested, LL/33284

Sonya Noskowiak, 1931, Leaf, Gelatin silver print, Nelson-Atkins Museum of Art, LL/81565

Tom Blake, 1931, Waitkiki, Continuous Tone Digital print, Ariel Meyerowitz Gallery, LL/2608

Tom Blake, 1931, Duke Kahanamoku, Waikiki, Continuous Tone Digital print, Ariel Meyerowitz Gallery, LL/2607

Unidentified artist, 1931, "Charming" - Advertising blotter and calendar for French's Greenhouses in Wayland, Massachusetts, Calendar / blotter, Private collection of Jack and Beverly Wilgus, LL/118963

Unidentified designer, 1931, M Ein Fritz Lang-Film, Paper program, Swann Galleries - New York, LL/66968

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22407

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22408

Unidentified photographer, 1931, The State Circus: rehearsal for the evening performance [Uzbeks. Uzbekistan, Samarkand region, the city of Samarkand (Samarkand district of the Uzbek SSR)], Photograph, Museum of Anthropology and Ethnography. Peter the Great (Kunstkamera) of the Russian Academy of Sciences, LL/100647

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22406

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22409

Unidentified photographer, 1931, Human Zoo - Exposition coloniale internationale: "Nègres qui serviront au Palais de l'Afrique équatoriale, prenez contact avec le publique dans différents cafés de Paris" [sic], Gelatin silver print, Millon et Associes, LL/80495

Unidentified photographer, 1931, Human Zoo - Exposition coloniale internationale: "Nègres qui serviront au Palais de l'Afrique équatoriale, prenez contact avec le publique dans différents cafés de Paris" [sic], Gelatin silver print, detail, Millon et Associes, LL/80496

Unidentified photographer, 1931, Exposition Coloniale Internationale de Paris 1931 - No. 21, Stereograph, glass positive, Private collection of Peppin - Peppin Anaglyphes, LL/120606

Unidentified photographer, 1931, Sunkist Oranges, Cedar Falls, Iowa, Gelatin silver print, Archive Farms, LL/115768

Unidentified photographer, 1931, A canary on top of a bird cage, Photograph, FOTO:Fortepan, LL/82965

Unidentified photographer, 1931, A scratched erotic portrait, Photograph, FOTO:Fortepan, LL/82966

Unidentified photographer, 1931, Two men with an aeroplane foreground, Hungary, Photograph, FOTO:Fortepan, LL/82967

Unidentified photographer, 1931, Arcade portrait of a man with a foreground depicting a snake charmer and dancer (Colonial Exposition, Paris. 1931), Gelatin silver print, Private collection of Christopher Steiner, LL/84542

Unidentified photographer, 1931, "His share, a bedding and a bag of flour" [Refugee from the floods in China], Gelatin silver print, snapshot, Private collection of Yunlinghao He, LL/100766

Unidentified photographer, 1931, American Navy airship USS Macon (ZRS-5), under construction by the Goodyear-Zeppelin company in Akron, Ohio., Gelatin silver print, Internet - Original source ill-defined, LL/94091

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22411

Unidentified photographer, 1931, In old Samarkand: Vostok hairdresser at Registan [Uzbeks. Uzbekistan, Samarkand region, the city of Samarkand (Samarkand district of the Uzbek SSR)}, [Central Asian Ethnological Expedition of the Academy of Sciences of the USSR (1931)], Photograph, Museum of Anthropology and Ethnography. Peter the Great (Kunstkamera) of the Russian Academy of Sciences, LL/100514

Unidentified photographer, 1931, Le Tam-Tam et les Danseuses Foulahs - Danseuses de Siguiri - La Dance de l'Offrande, [Exposition Coloniale Internationale - Paris 1931], Postcard, Creative Commons - Wikipedia, LL/64422

Unidentified photographer, 1931, Somebody's going to make a hit soon and how., Gelatin silver print, with handwriting, Private collection of Ken Kriete, LL/67773

Unidentified photographer, 1931, Somebody's going to make a hit soon and how., Gelatin silver print, back, with handwriting, Private collection of Ken Kriete, LL/67774

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22410

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22415

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22414

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22413

Unidentified photographer, 1931, Film stills from Carl-theodor Dreyer‘s "Vampyr", Gelatin silver print, matte, Larry Gottheim, Be-hold, Inc, LL/22412

Unidentified photographer (France), 1931, Excursion en Chine, Colonial Exposition, Paris, Real photo postcard, Private collection of Christopher Steiner, LL/104509

Unidentified photographer (Holmes family?), 1931, Here we are again Wishing you all the joys of Christmas Day and a mighty Happy New Year. 1931, Christmas greeting, photo collage, Private collection of Robert E. Jackson, LL/116099

Unidentified photographer (Russia), 1931, Funeral. The banner reads: "Collective farm "October". We will provide the country with food in the third year of the five-year plan by successfully conducting spring sowing". USSR, Gelatin silver print, Private collection of Sergey Maximishin, LL/111970

Unidentified photographer(s), 1931, Exposition Coloniale Internationale de Paris 1931 - Positifs sur Verre et Tons Chauds, Packaging for glass positives, Private collection of Peppin - Peppin Anaglyphes, LL/120605

Unknown photographer, 1931, Exterior view of the First House Commune and the Shabolovsky Broadcasting Station aerial tower, [USSR in Construction], Photograph, CCA: Canadian Centre for Architecture, LL/64480

Walker Evans, 1931, Main Street, Saratoga Springs, New York, Gelatin silver print, J. Paul Getty Museum, LL/6053

Walker Evans, 1931, Lunch Wagon Detail, New York, Gelatin silver print, J. Paul Getty Museum, LL/51499

Walker Evans, 1931, Victorian House Survey, Ocean Grove, New Jersey, Gelatin silver print, Klotz / Sirmon Gallery (CLOSED), LL/3379

Walker Evans, 1931, Main Street, Saratoga Springs, Gelatin silver print, Lee Gallery, LL/14187

Walker Evans, 1931, South Street, New York, Gelatin silver print, Lee Gallery, LL/3207

Walker Evans, 1931, Gothic Gate Cottage, Poughkeepsie, New York, Gelatin silver print, Sotheby's - New York, LL/73997

Walker Evans, 1931, Doorway, 204 West 13th Street, New York City, Barry Singer Gallery, LL/2803

Willi Ruge, 1931, Seconds before Landing, Gelatin silver print, Internet - Original source ill-defined, LL/65586

Willy Pragher, 1931, The actress Käte Dirxen, Gelatin silver print, Private collection of Fostin Cotchen, LL/128557

Arkadii Shaikhet, 1931 (taken), A komsomol at the wheel, Gelatin silver print, Van Ham Fine Art Auctions, LL/48396

Eva Besnyö, 1931 (taken), Starnberger Straße, Berlin, Gelatin silver print, Bassenge Photography Auctions, LL/47913

Ilse Bing, 1931 (taken), Eiffel Tower (Étoile), Gelatin silver print, Lempertz - Cologne, LL/52116

Anton Stankowski, 1931 (taken) (1950s (probably, print), Medizinische Lampe, Gelatin silver print, ferrotyped, Lempertz - Cologne, LL/83312

Alfred Stieglitz, 1931 (taken) 1946 (before, print), New York, 1931, Gelatin silver print, Swann Galleries - New York, LL/74142

Paul Strand, 1931 (taken) 1950s (print), Ranchos de Taos Church, New Mexico, Gelatin silver print, Phillips de Pury - New York, LL/23538

Edward Weston, 1931 (taken) 1955 (print), Egg [and bone], Gelatin silver print, Swann Galleries - New York, LL/43860

Raoul Hausmann, 1931 (taken) 1968 (print), Untitled, [Melanographies], Gelatin silver print, Bassenge Photography Auctions, LL/32512

Ladislav Emil Berka, 1931 (taken) 1970 (ca, print), ‘Auborn Cord', Paris, Gelatin silver print, Ostlicht - Gallery for Photography, LL/115354

André Kertész, 1931 (taken) 1970s (print), Ernest., Gelatin silver print, Swann Galleries - New York, LL/125698

Ansel Adams, 1931 (taken) 1970s (print), Political Signs and Circus Poster, San Francisco, Gelatin silver print, Swann Galleries - New York, LL/77792

Margaret Bourke-White, 1931 (taken) 1970s-1980s (print), Pierce-Arrow automobile, Gelatin silver print, Bassenge Photography Auctions, LL/91358

Walker Evans, 1931 (taken) 1971 (print), Wellfleet, Massachusetts, Gelatin silver print, National Gallery of Canada / Musée des beaux-arts du Canada, LL/63590

Walker Evans, 1931 (taken) 1971 (print), Flowers and Poster of Herbert Hoover in House Window, Wellfleet, Massachusetts, Silver print, Swann Galleries - New York, LL/87174

Walker Evans, 1931 (taken) 1971 (print), Bed and Stove, Truro, Massachusetts, Gelatin silver print, SFMOMA - San Francisco Museum of Modern Art, LL/6055

Ansel Adams, 1931 (taken) 1973-1977 (print), Political Signs and Circus Posters, San Francisco, Gelatin silver print, Swann Galleries - New York, LL/94339

Piet Zwart, 1931 (taken) 1974 (print), Drucktypen [Printing types], [12 Fotografien (Portfolio)], Silver print, Swann Galleries - New York, LL/115047

Piet Zwart, 1931 (taken) 1974 (print), Arbeiter auf Holzstapel [Workers on wood piles], [12 Fotografien (Portfolio)], Silver print, Swann Galleries - New York, LL/115052

Piet Zwart, 1931 (taken) 1974 (print), Holzlager [Wood storage], [12 Fotografien (Portfolio)], Silver print, Swann Galleries - New York, LL/115053

Piet Zwart, 1931 (taken) 1974 (print), Briefumschläge [Envelopes], [12 Fotografien (Portfolio)], Silver print, Swann Galleries - New York, LL/115057

Martin Chambi, 1931 (taken) 1978 (print), Family Group, Cuzco, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/96535

Martin Chambi, 1931 (taken) 1978 (print), Birthday Party, Cuzco, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/96532

Martin Chambi, 1931 (taken) 1978 (print), Electricity Company of Cuzco, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/96534

Martin Chambi, 1931 (taken) 1978 (print), Fiesta Gathering, Hacienda Angostura, near Cuzco, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/96536

Martin Chambi, 1931 (taken) 1978 (print), Chicha and Sapo, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/96533

Martin Chambi, 1931 (taken) 1978 (print), General Luís M. Sanchez Cerro, Cuzco, Gelatin silver print, MoMA - Museum of Modern Art, New York, LL/96537

Manuel Álvarez Bravo, 1931 (taken) 1980 (ca, print), El Soñador [The Dreamer], Silver print, Swann Galleries - New York, LL/53826

Lee Miller, 1931 (taken) 1980s (print), Man Ray, Gelatin silver print, Bloomsbury Auctions - London, LL/49345

André Kertész, 1931 (taken) 1981 (print), Market, Pays Basque, Gelatin silver print, Nelson-Atkins Museum of Art, LL/81139

Ilse Bing, 1931 (taken) 1983 (print), Tour Eiffel - Champs de Mars, Gelatin silver print, Swann Galleries - New York, LL/43328

Ladislav Emil Berka, 1931 (taken) 1985 (print), ‘Film-Roll', Prague, Gelatin silver print, Ostlicht - Gallery for Photography, LL/115356

Man Ray, 1931 (taken) 1986 (print), Composition avec l'oeuf, Gelatin silver print, Lempertz - Cologne, LL/50739

Ilse Bing, 1931 (taken) 1988 (print), Self-Portrait with Leica, Gelatin silver print, Bassenge Photography Auctions, LL/33522

Ilse Bing, 1931 (taken) 1992 (print), Me in the mirror with Leica, Gelatin silver print, Phillips de Pury - New York, LL/27370

Léonard Misonne, 1931 (taken) 1997 (print), The Alley: Dusk, Gelatin silver print, toned, Heritage Auctions, LL/66545

Cecil Beaton, 1931 (taken) 2010 (print), Gary Cooper, Hollywood, Gelatin silver print, Lempertz - Cologne, LL/94817

Albert Renger-Patzsch, 1931, Book cover for Albert Renger-Patzsch "Eisen und Stahl" (Berlin: Verlag Hermann Reckendorf, 1931), Book cover, Ader Nordmann, LL/43350

Albert Renger-Patzsch, 1931, Book cover for Albert Renger-Patzsch "Eisen und Stahl -- Iron and Steel." (Berlin: Hermann Reckendorf, 1931), Book cover, Christie's - New York, LL/28359

Edward Steichen, 1931, Book cover for Edward Steichen, 1931, The Second Picture Book, (New York: Harcourt, Brace and Company), Book cover, Swann Galleries - New York, LL/53498

Edwin Hale Lincoln, 1931, 6. Calypso bulbosa. [Cythera?] Calypso Fairy Slipper, Book plate, Donald A. Heald - Rare Books, Prints & Maps, LL/41237

Edwin Hale Lincoln, 1931, Title page for Edwin Hale Lincoln, "Orchids of the North Eastern United States, Photographed from Nature" (Pittsfield, Massachusetts: published by the author, 1931) 2 volumes, Title page, Donald A. Heald - Rare Books, Prints & Maps, LL/41236

Edwin Hale Lincoln, 1931, Book cover for Edwin Hale Lincoln, "Orchids of the North Eastern United States, Photographed from Nature" (Pittsfield, Massachusetts: published by the author, 1931) 2 volumes, Book cover, Donald A. Heald - Rare Books, Prints & Maps, LL/41235

Erich Retzlaff, 1931, Book cover for Erich Retzlaff,Die von der Scholle [Those who till the soil], (Göttingen, Verlag der Deuerlichschen Buchhandlung o.J., 1931), Book cover, Private collection of Dr. Christopher Webster, LL/50264

Erich Salomon, 1931, Book cover for Dr. Erich Salomon "Berühmte Zeitgenossen" (Stuttgart: Engelhorns Nachf., 1931), Book cover, Private collection, LL/48343

Germaine Krull, 1931, Page from Georges Simenon & Germaine Krull, 1931, La folle d'Itteville, (Paris: Editions J. Haumont), Book page, MoMA - Museum of Modern Art, New York, LL/67988

Germaine Krull, 1931, Book cover for Germaine Krull "Photographies Noveaux" With a text by Pierre Mac Orlan (Paris: Librairie Gallimard, 1931), Book cover, Van Ham Fine Art Auctions, LL/29187

Germaine Krull, 1931, Book cover for Germaine Krull & Claude Farrère, 1931, La Route Paris-Biarritz, (Paris: Jacques Haumont), Book cover, Ader Nordmann, LL/66999

Germaine Krull, 1931, [Untitled], Book illustration, Ader Nordmann, LL/53698

Germaine Krull, 1931, Book cover for Germaine Krull, 1931, Le Confort au Palais et dans les Appartements, (Paris, Edite par SOC pour la Société Générale de Fonderie) [With texts by Pierre Mac-Orlan, Marcel Prevost and others], Book cover, Ader Nordmann, LL/53697

Germaine Krull, 1931, Book cover for Georges Simenon & Germaine Krull, 1931, La folle d'Itteville, (Paris: Editions J. Haumont), Book cover, Sotheby's - Paris, LL/67986

Germaine Krull, 1931, Page from Georges Simenon & Germaine Krull, 1931, La folle d'Itteville, (Paris: Editions J. Haumont), Book page, Sotheby's - Paris, LL/67987

Helmar Lerski, 1931, Book cover for Helmar Lerski, 1931, Köpfe des Alltags. Unbekannte Menschen -- Everyday Heads. Unknown People, (Berlin: Hermann Reckendorf), Book cover, Christie's - London, LL/52863

Helmar Lerski, 1931, Book cover for Helmar Lerski Köpfe des Alltags. Unbekannte Menschen gesehen von Helmar Lerski. (Berlin: Verlag Hermann Reckendorf, 1931), Book cover, Van Ham Fine Art Auctions, LL/44887

Margaret Bourke-White, 1931, Book cover for Margaret Bourke-White, 1931, Eyes on Russia, With a foreword by Maurice Hindus, (New York: Simon and Schuster), Book cover, Bassenge Photography Auctions, LL/51829

Max Ernst, 1931, Book cover for Max Ernst, 1931, Mr. Knife Miss Fork, Text by René Crevel, (Paris: the Black Sun Press), Book cover, Christie's - New York, LL/28358

Moi Ver, 1931, Book cover for Moi Ver "Paris" (Editions Jeanne Walter, 1931), Book cover, British Library, LL/48344

Moi Ver, 1931, Book cover for M. Vorobeichic - S. Chnéour "The ghetto lane in Wilna" (Zurich - Leipzig: Orell Fussli Verlag, 1931), Book cover, Bassenge Photography Auctions, LL/48043

Moi Ver, 1931, Book cover for M. Vorobeichic - S. Chnéour "The ghetto lane in Wilna" (Zurich - Leipzig: Orell Fussli Verlag, 1931), Book cover, Ader Nordmann, LL/47254

, 1931, Book cover for Moi Ver "Paris. Introduction by Fernand Léger" (Paris: Jeanne Walter, 1931), Book cover, Christie's - New York, LL/28360

Fukuhara Shinzõ, 1931, Book cover for Shinzu Fukuhara "Beautiful West Lake" (okyo: Japan Photographic Society, 1931), Book cover, Swann Galleries - New York, LL/28624

Charles Sheeler, 1931, View of New York, Oil on canvas, Museum of Fine Arts, Boston, LL/112217

Charles Sheeler, 1931, Cactus and Photographer's Lamp, Painting, Philadelphia Museum of Art, LL/67903