Black and white photograph, taken by Robert Merrill, looking southeast toward lakes. Likely taken near Pikes Peak, Colorado.

Black and white photograph, taken by Robert Merrill, looking southwest toward Cripple Creek, Colorado.

Black and white photograph of rocks at Point Sublime, taken by Robert Merrill from a stationary train.

Black and white photograph of rocks to the east of a summit. Railroad tracks can be seen through the rocky landscape.

Black and white photograph of rocky landscape at Clyde. The front engine of a train is visible at the lower right edge of the photograph.

Black and white photograph of a tree-filled valley between two mountains with another mountain in the background.

Black and white photograph of a road lined with power lines and fences in front of a field. A barn is visible behind a line of trees. A mountain range is visible in the distance.

Black and white photograph of a mountain with trees and a power line visible in the foreground. Another mountain is visible in the distance.

Black and white photograph of a tree-covered mountain, Mount Stanton, with a road visible in the foreground.

Black and white photograph of the Mt. Manitou Scenic Railway in Colorado. A woman, possibly Lena Merrill, is visible at a distance. A sign to the right reads The Scenic Incline to Mt. Manitou Park.

Black and white photograph of two people in an automobile driving on a road in front of a mountain, likely the Hoosac Range in the area of eastern New York and western Massachusetts.

Black and white photograph of Lower Falls, Yellowstone National Park. Taken by Robert Merrill, looking down from brink.