MLA

Granger, Lester B. (Lester Blackwell), 1896-1976. Barriers to Negro War Employment. Box 1 | Folder 10. https://collections.library.yale.edu/catalog/16750166.

APA, 6th edition

Granger, Lester B. (Lester Blackwell), 1896-1976. (["Box 1 | Folder 10"])[Barriers to Negro War Employment]. https://collections.library.yale.edu/catalog/16750166.