Engagement calendars
MLA
Hughes, Langston, 1902-1967. Engagement calendars. Box 490. 1950-58. https://collections.library.yale.edu/catalog/2053960.
APA, 6th edition
Hughes, Langston, 1902-1967. (["Box 490"])(1950-58)[Engagement calendars]. https://collections.library.yale.edu/catalog/2053960.