MLA

Hughes, Langston, 1902-1967. Myers, Paulene. Box 115, folder 2198. 1957-67. https://collections.library.yale.edu/catalog/32345410.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 115, folder 2198"])(1957-67)[Myers, Paulene]. https://collections.library.yale.edu/catalog/32345410.