MLA

Van Vechten, Carl, 1880-1964. La Touche, John. Box 357 | Folder 4892. 1944 May 21. https://collections.library.yale.edu/catalog/2056228.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 357 | Folder 4892"])(1944 May 21)[La Touche, John]. https://collections.library.yale.edu/catalog/2056228.