MLA

Van Vechten, Carl, 1880-1964. Johnson, Hall. Box 224. 1947 May 14. https://collections.library.yale.edu/catalog/2023184.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 224"])(1947 May 14)[Johnson, Hall]. https://collections.library.yale.edu/catalog/2023184.