MLA

Van Vechten, Carl, 1880-1964. Brown, Gabriel. Box 85, folder 1436. 1935 November 28. https://collections.library.yale.edu/catalog/2021138.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 85, folder 1436"])(1935 November 28)[Brown, Gabriel]. https://collections.library.yale.edu/catalog/2021138.