MLA

Van Vechten, Carl, 1880-1964. Griffith, Dick. Box 351 | Folder 4697. 1940 October 23. https://collections.library.yale.edu/catalog/2036122.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 351 | Folder 4697"])(1940 October 23)[Griffith, Dick]. https://collections.library.yale.edu/catalog/2036122.