Cite

[Photograph of an Indian on horseback]

MLA

[Photograph of an Indian on Horseback]. 0AD. https://collections.library.yale.edu/catalog/2010724.

APA, 6th edition

[Photograph of an Indian on horseback]. (0 C.E.). [Photographic prints, Photographs, Snapshots]. https://collections.library.yale.edu/catalog/2010724.