MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Missouri. Box 4, folder 148. 1929. https://collections.library.yale.edu/catalog/2025335.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 4, folder 148"])(1929)[Missouri]. https://collections.library.yale.edu/catalog/2025335.