MLA

Hughes, Langston, 1902-1967. Alofsin, Dorothy. Box 6, folder 106. 1946-49. https://collections.library.yale.edu/catalog/32579121.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 6, folder 106"])(1946-49)[Alofsin, Dorothy]. https://collections.library.yale.edu/catalog/32579121.