MLA

Van Vechten, Carl, 1880-1964. Abrahams, Peter. Box 225. 1955 November 25. https://collections.library.yale.edu/catalog/2024301.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 225"])(1955 November 25)[Abrahams, Peter]. https://collections.library.yale.edu/catalog/2024301.