MLA

Van Vechten, Carl, 1880-1964. George, George Edward. Box 349, folder 4642. 1945 December 17. https://collections.library.yale.edu/catalog/2035068.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 349, folder 4642"])(1945 December 17)[George, George Edward]. https://collections.library.yale.edu/catalog/2035068.