MLA

Van Vechten, Carl, 1880-1964. Fontanne, Lynn. Box 348, folder 4600. 1932 May 23. https://collections.library.yale.edu/catalog/2034653.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 348, folder 4600"])(1932 May 23)[Fontanne, Lynn]. https://collections.library.yale.edu/catalog/2034653.