MLA

Johnson, James Weldon, 1871-1938. Pan-American. Box 103, folder 864. 1954. https://collections.library.yale.edu/catalog/2110140.

APA, 6th edition

Johnson, James Weldon, 1871-1938. (["Box 103, folder 864"])(1954)[Pan-American]. https://collections.library.yale.edu/catalog/2110140.