Cite

Letter : to [Harry] Block

MLA

Hughes, Langston, 1902-1967. Letter : to [Harry] Block. Box 2, folder GROUP 21, F-5. [1926 February?]. https://collections.library.yale.edu/catalog/16593870.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 2, folder GROUP 21, F-5"])([1926 February?])[Letter : to [Harry] Block]. https://collections.library.yale.edu/catalog/16593870.