MLA

Van Vechten, Carl, 1880-1964. Johnson, Mildred. Box 94 | Folder 1675. 1937 June 16. https://collections.library.yale.edu/catalog/2025661.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 94 | Folder 1675"])(1937 June 16)[Johnson, Mildred]. https://collections.library.yale.edu/catalog/2025661.