Cite

[No. 83: Photograph of animal tracks in sand]

MLA

[No. 83: Photograph of Animal Tracks in Sand]. 1915. https://collections.library.yale.edu/catalog/11680343.

APA, 6th edition

[No. 83: Photograph of animal tracks in sand]. (1915). [Photographs, Slides (glass)]. https://collections.library.yale.edu/catalog/11680343.