MLA

Van Vechten, Carl, 1880-1964. Events. Carl Van Vechten: His Gifts to Yale. An Exhibition in Honor of His Seventy-fifth Birthday at the Yale University Library, New Haven, Connecticut. Van Vechten, Carl. Box 385, folder 5818. 1955 June 22. https://collections.library.yale.edu/catalog/10618393.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 385, folder 5818"])(1955 June 22)[Events. Carl Van Vechten: His Gifts to Yale. An Exhibition in Honor of His Seventy-fifth Birthday at the Yale University Library, New Haven, Connecticut. Van Vechten, Carl]. https://collections.library.yale.edu/catalog/10618393.