MLA

Van Vechten, Carl, 1880-1964. Braithwaite, William Stanley. Box 85 | Folder 1424. 1947 March 27. https://collections.library.yale.edu/catalog/2021071.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 85 | Folder 1424"])(1947 March 27)[Braithwaite, William Stanley]. https://collections.library.yale.edu/catalog/2021071.