MLA

Van Vechten, Carl, 1880-1964. Harlem. Young Men's Christian Association of the City of New York., 135th Street Branch. Box 225. 1940 October 5. https://collections.library.yale.edu/catalog/2024562.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 225"])(1940 October 5)[Harlem. Young Men's Christian Association of the City of New York., 135th Street Branch]. https://collections.library.yale.edu/catalog/2024562.