MLA

Johnson, James Weldon, 1871-1938. Grace Nail Johnson and Carl Van Vechten going over James Weldon Johnson's papers. Box 111, folder 994. 1945. https://collections.library.yale.edu/catalog/10607152.

APA, 6th edition

Johnson, James Weldon, 1871-1938. (["Box 111, folder 994"])(1945)[Grace Nail Johnson and Carl Van Vechten going over James Weldon Johnson's papers]. https://collections.library.yale.edu/catalog/10607152.