Cite

Knopf, Alfred A., Sr., with Blanche W. Knopf and Richmond Mayo-Smith at Lynbrook, New York

MLA

Van Vechten, Carl, 1880-1964. Knopf, Alfred A., Sr., with Blanche W. Knopf and Richmond Mayo-Smith at Lynbrook, New York. Box 357 | Folder 4871. 1934 September 12. https://collections.library.yale.edu/catalog/2054969.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 357 | Folder 4871"])(1934 September 12)[Knopf, Alfred A., Sr., with Blanche W. Knopf and Richmond Mayo-Smith at Lynbrook, New York]. https://collections.library.yale.edu/catalog/2054969.