MLA

Van Vechten, Carl, 1880-1964. Ingram, Rex, as Blacksnake in Stevedore, play by Paul Peters and George Sklar. Box 93, folder 1649. 1934 April 22. https://collections.library.yale.edu/catalog/2026034.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 93, folder 1649"])(1934 April 22)[Ingram, Rex, as Blacksnake in Stevedore, play by Paul Peters and George Sklar]. https://collections.library.yale.edu/catalog/2026034.