MLA

Canyon, Colorado, and Pacific Railway Survey. Soap Creek Rapid Marble Canyon. 283. 1889. https://collections.library.yale.edu/catalog/2017885.

APA, 6th edition

Canyon, C., & Survey, P. R. (1889). Soap Creek rapid Marble Canyon. 283 [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017885.