| Information requests | |
| 1 | Improving content on US states |
| Introduction | |
| 2 | Introduction to photography in Pennsylvania |
| Daguerreotypists | |
| 3 | Joseph Saxton: Philadelphia Central High School for Boys and Pennsylvania State Arsenal |
| 4 | Robert Cornelius: Daguerreotype portraits |
| 5 | Samuel Broadbent: Daguerreotype portraits |
| 6 | Marcus Aurelius Root: Daguerreotype portraits |
| Case study | |
| 7 | The Daguerreotype studios of Chestnut Street, Philadelphia |
| Photographers | |
| 8 | James Cremer: Philadelphia, Pennsylvania |
| 9 | A.H. Hemple: Centennial views of Philadelphia and Fairmount Park [Series] |
| 10 | Dr. C.L. Lochman: Carlisle, Pennsylvania (1861-1874) |
| 11 | John N. Choate: Indian Training School, Carlisle, PA |
| Events | |
| 12 | Johnstown Flood (1889) |
| Railways | |
| 13 | Purviance: Purviance's Views, Penn'a Central Rail Road |
| Industry | |
| 14 | Lufkin: Lufkin's Photographic Views - Oil Regions of Pennsylvania |
| 15 | West & Waddell: Stereoscopic views of the Pennsylvania Oil Regions. (1860-1890) |
| 16 | H.T. Clauder: Scenery in and around Bethlehem, Pa. [Series] |
| Documentary | |
| 17 | Walker Evans: USA: Pennsylvania |
| 18 | W. Eugene Smith: The Pittsburgh Project |
| Information requests | |
| 1 | Improving content on US states |
| Introduction | |
| 2 | Introduction to photography in Pennsylvania |
| Daguerreotypists | |
| 3 | Joseph Saxton: Philadelphia Central High School for Boys and Pennsylvania State Arsenal |
| 4 | Robert Cornelius: Daguerreotype portraits |
| 5 | Samuel Broadbent: Daguerreotype portraits |
| 6 | Marcus Aurelius Root: Daguerreotype portraits |
| Case study | |
| 7 | The Daguerreotype studios of Chestnut Street, Philadelphia |
| Photographers | |
| 8 | James Cremer: Philadelphia, Pennsylvania |
| 9 | A.H. Hemple: Centennial views of Philadelphia and Fairmount Park [Series] |
| 10 | Dr. C.L. Lochman: Carlisle, Pennsylvania (1861-1874) |
| 11 | John N. Choate: Indian Training School, Carlisle, PA |
| Events | |
| 12 | Johnstown Flood (1889) |
| Railways | |
| 13 | Purviance: Purviance's Views, Penn'a Central Rail Road |
| Industry | |
| 14 | Lufkin: Lufkin's Photographic Views - Oil Regions of Pennsylvania |
| 15 | West & Waddell: Stereoscopic views of the Pennsylvania Oil Regions. (1860-1890) |
| 16 | H.T. Clauder: Scenery in and around Bethlehem, Pa. [Series] |
| Documentary | |
| 17 | Walker Evans: USA: Pennsylvania |
| 18 | W. Eugene Smith: The Pittsburgh Project |