MLA

Dellenbaugh, Frederick Samuel, 1853-1935. California. Box 1, folder 22. 1922. https://collections.library.yale.edu/catalog/2017627.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 1, folder 22"])(1922)[California]. https://collections.library.yale.edu/catalog/2017627.