B.F. Hoyt, 1897 (ca), "Ruined Castles" of the Yellowstone, [Wonders of the Yellowstone, as Mirrored in the Camera, Views of the National Park.], Stereoview, Library of Congress, Prints and Photographs Division, LL/109321

B.F. Hoyt, 1897 (ca), Angel Terrace, Mammoth Hot Springs, [Wonders of the Yellowstone, as Mirrored in the Camera, Views of the National Park.], Stereoview, Library of Congress, Prints and Photographs Division, LL/109312

B.F. Hoyt, 1897 (ca), Comet Geyser, [Wonders of the Yellowstone, as Mirrored in the Camera, Views of the National Park.], Stereoview, Library of Congress, Prints and Photographs Division, LL/109318

B.F. Hoyt, 1897 (ca), Economic Geyser, [Wonders of the Yellowstone, as Mirrored in the Camera, Views of the National Park.], Stereoview, Library of Congress, Prints and Photographs Division, LL/109313

B.F. Hoyt, 1897 (ca), Grand Falls of Yellowstone River. More than twice as high as Niagara, [Wonders of the Yellowstone, as Mirrored in the Camera, Views of the National Park.], Stereoview, Library of Congress, Prints and Photographs Division, LL/109317