MLA

Butts, Mary, 1890-1937. Holograph volume. Box 7, folder 130. 1934-37. https://collections.library.yale.edu/catalog/16586558.

APA, 6th edition

Butts, Mary, 1890-1937. (["Box 7, folder 130"])(1934-37)[Holograph volume]. https://collections.library.yale.edu/catalog/16586558.