Cite

On the east side of Shepherd Pass. 151

MLA

On the East Side of Shepherd Pass. 151. 0AD. https://collections.library.yale.edu/catalog/2016761.

APA, 6th edition

On the east side of Shepherd Pass. 151. (0 C.E.). [Photographic prints, Photographs, Stereographs]. https://collections.library.yale.edu/catalog/2016761.