Cite

Rocky wall of the Middle Fork as it works its way down towards Simpson's Meadows. 97

MLA

Rocky Wall of the Middle Fork as It Works Its Way down towards Simpson's Meadows. 97. 0AD. https://collections.library.yale.edu/catalog/2015492.

APA, 6th edition

Rocky wall of the Middle Fork as it works its way down towards Simpson's Meadows. 97. (0 C.E.). [Photographic prints, Photographs, Stereographs]. https://collections.library.yale.edu/catalog/2015492.