Cite

[Photograph of pack train moving through river]

MLA

[Photograph of Pack Train Moving through River]. 1915. https://collections.library.yale.edu/catalog/11683498.

APA, 6th edition

[Photograph of pack train moving through river]. (1915). [Group portraits, Photographs, Slides (glass)]. https://collections.library.yale.edu/catalog/11683498.