MLA

Hughes, Langston, 1902-1967. Acty, Ruth. Box 2, folder 24. 1945. https://collections.library.yale.edu/catalog/32604295.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 2, folder 24"])(1945)[Acty, Ruth]. https://collections.library.yale.edu/catalog/32604295.