MLA

Van Vechten, Carl, 1880-1964. De Lavallade, Carmen, and Geoffrey Holder, with Elaine De Lavallade and Emery Lewis. Box 225. 1955 June 26. https://collections.library.yale.edu/catalog/2024375.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 225"])(1955 June 26)[De Lavallade, Carmen, and Geoffrey Holder, with Elaine De Lavallade and Emery Lewis]. https://collections.library.yale.edu/catalog/2024375.