MLA

Johnson, James Weldon, 1871-1938. "Gifts of the Negro," draft, typescript. Box 76, folder 506. undated. https://collections.library.yale.edu/catalog/16748059.

APA, 6th edition

Johnson, James Weldon, 1871-1938. (["Box 76, folder 506"])(undated)["Gifts of the Negro," draft, typescript]. https://collections.library.yale.edu/catalog/16748059.