MLA

Van Vechten, Carl, 1880-1964. "James Weldon Johnson Memorial Collection of Negro Arts and Letters Founded by Carl Van Vechten". Box 62, folder 1058-1071. 1941-circa 1950. https://collections.library.yale.edu/catalog/33213859.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 62, folder 1058-1071"])(1941-circa 1950)["James Weldon Johnson Memorial Collection of Negro Arts and Letters Founded by Carl Van Vechten"]. https://collections.library.yale.edu/catalog/33213859.