Cite

Sinclair, May

MLA

Butts, Mary, 1890-1937. Sinclair, May. Box 2, folder 40. 1920 Jan 7. https://collections.library.yale.edu/catalog/16947639.

APA, 6th edition

Butts, Mary, 1890-1937. (["Box 2, folder 40"])(1920 Jan 7)[Sinclair, May]. https://collections.library.yale.edu/catalog/16947639.