MLA

Van Vechten, Carl, 1880-1964. Wescott, Glenway. Box 447, folder 7226. 1936 October 29. https://collections.library.yale.edu/catalog/33343581.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 447, folder 7226"])(1936 October 29)[Wescott, Glenway]. https://collections.library.yale.edu/catalog/33343581.