Black and white lantern slide copy of a geological map of Yellowstone National Park and Yellowstone Forest Reserve from an unknow source.

Black and white lantern slide copy of a sketch cross-section of Amethyst Mountain in Yellowstone National Park, from an unknown source.

Black and white lantern slide of the Golden Gate Viaduct in Yellowstone National Park.

Black and white photograph of a stone pillar. The image is somewhat blurry.

Black and white photograph of a mountain partially covered with trees.

Black and white photograph of a mountain partially covered with trees.

Black and white photograph of a road next to a mountainside with a mountain range visible in the distance.

Black and white photograph of Gibbon Falls in Yellowstone National Park. Gibbon Falls is surrounded by mountains and forest.

Black and white photograph of the Fountain Geyser at Yellowstone National Park. Steam is rising from the geyser, and a pine tree stands between the geyser and the photographer.

Black and white close-up photograph of Punch Bowl Spring in Yellowstone National Park.

Black and white photograph of the active Jewel Geyser in front of a forest at Yellowstone National Park.

Black and white photograph of a crowd of people watching Old Faithful erupt in Yellowstone National Park (mile 17649.)