Cite

[No. 64: Photograph of snow capped mountains, glacial valley]

MLA

[No. 64: Photograph of Snow Capped Mountains, Glacial Valley]. 1915. https://collections.library.yale.edu/catalog/11679664.

APA, 6th edition

[No. 64: Photograph of snow capped mountains, glacial valley]. (1915). [Photographs, Slides (glass)]. https://collections.library.yale.edu/catalog/11679664.