Cite

Summit of Colby Pass looking toward Triple Divide Peak. 158

MLA

Summit of Colby Pass Looking toward Triple Divide Peak. 158. 0AD. https://collections.library.yale.edu/catalog/2016768.

APA, 6th edition

Summit of Colby Pass looking toward Triple Divide Peak. 158. (0 C.E.). [Photographic prints, Photographs, Stereographs]. https://collections.library.yale.edu/catalog/2016768.