MLA

Hagedorn, Hermann, 1882-1964. Pinchot, Gifford. Box 10. 1922-1946. https://collections.library.yale.edu/catalog/17420192.

APA, 6th edition

Hagedorn, Hermann, 1882-1964. (["Box 10"])(1922-1946)[Pinchot, Gifford]. https://collections.library.yale.edu/catalog/17420192.