MLA

Matthiessen, F. O. (Francis Otto), 1902-1950. Davenport, Russell. Box 1. 1929-1946. https://collections.library.yale.edu/catalog/32239618.

APA, 6th edition

Matthiessen, F. O. (Francis Otto), 1902-1950. (["Box 1"])(1929-1946)[Davenport, Russell]. https://collections.library.yale.edu/catalog/32239618.