Cite

[Photograph of a Colorado landscape]

MLA

Beaman, E. O. [Photograph of a Colorado Landscape]. 1871. https://collections.library.yale.edu/catalog/2015537.

APA, 6th edition

Beaman, E. O. (1871). [Photograph of a Colorado landscape] [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2015537.