MLA

Johnson, James Weldon, 1871-1938. Draft, typescript, corrected. Box 76, folder 495. 1932 April 30. https://collections.library.yale.edu/catalog/16748055.

APA, 6th edition

Johnson, James Weldon, 1871-1938. (["Box 76, folder 495"])(1932 April 30)[Draft, typescript, corrected]. https://collections.library.yale.edu/catalog/16748055.