Cite

Echo Park and Echo Rock, Green River, Colorado

MLA

Beaman, E. O. Echo Park and Echo Rock, Green River, Colorado. 1871. https://collections.library.yale.edu/catalog/2017560.

APA, 6th edition

Beaman, E. O. (1871). Echo Park and Echo Rock, Green River, Colorado [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017560.