MLA

Van Vechten, Carl, 1880-1964. Shirley, George. Box 226. 1961 October 10. https://collections.library.yale.edu/catalog/2024858.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 226"])(1961 October 10)[Shirley, George]. https://collections.library.yale.edu/catalog/2024858.