Cite

[No. 7: Photograph of camp with canoes in foreground]

MLA

[No. 7: Photograph of Camp with Canoes in Foreground]. 1915. https://collections.library.yale.edu/catalog/11679499.

APA, 6th edition

[No. 7: Photograph of camp with canoes in foreground]. (1915). [Photographs, Slides (glass)]. https://collections.library.yale.edu/catalog/11679499.