MLA

Hurston, Zora Neale, 1891-1960. Holograph manuscript. Box 1, folder 9. 1941. https://collections.library.yale.edu/catalog/2005466.

APA, 6th edition

Hurston, Zora Neale, 1891-1960. (["Box 1, folder 9"])(1941)[Holograph manuscript]. https://collections.library.yale.edu/catalog/2005466.