MLA

Van Vechten, Carl, 1880-1964. Matthews, Clyde Edward. Box 97, folder 1736. 1932 June 8. https://collections.library.yale.edu/catalog/2026370.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 97, folder 1736"])(1932 June 8)[Matthews, Clyde Edward]. https://collections.library.yale.edu/catalog/2026370.