MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Portraits. Box 3, folder 92. 1932. https://collections.library.yale.edu/catalog/2018240.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 3, folder 92"])(1932)[Portraits]. https://collections.library.yale.edu/catalog/2018240.