Cite

[No. 12: Photograph of camp with tepee in silhouette]

MLA

[No. 12: Photograph of Camp with Tepee in Silhouette]. 1915. https://collections.library.yale.edu/catalog/11679503.

APA, 6th edition

[No. 12: Photograph of camp with tepee in silhouette]. (1915). [Photographs, Slides (glass)]. https://collections.library.yale.edu/catalog/11679503.