Cite

[Photograph of rapids in the Colorado River?]

MLA

Dellenbaugh, Frederick Samuel, 1853-1935. [Photograph of rapids in the Colorado River?]. Box 1 | Folder 30. undated. https://collections.library.yale.edu/catalog/2017654.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 1 | Folder 30"])(undated)[[Photograph of rapids in the Colorado River?]]. https://collections.library.yale.edu/catalog/2017654.