Cite

Photographs of Colorado, California and Washington [graphic].

MLA

Photographs of Colorado, California and Washington [Graphic]. 0AD. https://collections.library.yale.edu/catalog/2011592.

APA, 6th edition

Photographs of Colorado, California and Washington [graphic]. (0 C.E.). [Pictorial works, Card photographs (photographs), Photographic prints, Kodak prints]. https://collections.library.yale.edu/catalog/2011592.