MLA

Hughes, Langston, 1902-1967. Baker, Josephine. Box 16, folder 158. 1875-1978. https://collections.library.yale.edu/catalog/16206954.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 16, folder 158"])(1875-1978)[Baker, Josephine]. https://collections.library.yale.edu/catalog/16206954.