Cite

[No. 123: Photograph of river valley]

MLA

[No. 123: Photograph of River Valley]. 1915. https://collections.library.yale.edu/catalog/11680841.

APA, 6th edition

[No. 123: Photograph of river valley]. (1915). [Photographs, Slides (glass)]. https://collections.library.yale.edu/catalog/11680841.