MLA

Van Vechten, Carl, 1880-1964. Marshall, Armina, at Langner Lane Farm, Weston, Connecticut. Box 366 | Folder 5120. 1938 September 4. https://collections.library.yale.edu/catalog/2056028.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 366 | Folder 5120"])(1938 September 4)[Marshall, Armina, at Langner Lane Farm, Weston, Connecticut]. https://collections.library.yale.edu/catalog/2056028.