MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Utah. Box 4, folder 119. 1924, n.d.. https://collections.library.yale.edu/catalog/2025122.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 4, folder 119"])(1924, n.d.)[Utah]. https://collections.library.yale.edu/catalog/2025122.