MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Grand Canyon, Frederick on the rim. Box 1 | Folder 30. 1907. https://collections.library.yale.edu/catalog/2017656.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 1 | Folder 30"])(1907)[Grand Canyon, Frederick on the rim]. https://collections.library.yale.edu/catalog/2017656.