MLA

Van Vechten, Carl, 1880-1964. Hammond, Virginia. Box 352 | Folder 4721. 1939 April 25. https://collections.library.yale.edu/catalog/2036288.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 352 | Folder 4721"])(1939 April 25)[Hammond, Virginia]. https://collections.library.yale.edu/catalog/2036288.