MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Nevada. Box 5, folder 150. n.d.. https://collections.library.yale.edu/catalog/2025346.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 5, folder 150"])(n.d.)[Nevada]. https://collections.library.yale.edu/catalog/2025346.