MLA

Butts, Mary, 1890-1937. "Sequences," typescript carbon. Box 5, folder 96. 1917, n.d.. https://collections.library.yale.edu/catalog/16586540.

APA, 6th edition

Butts, Mary, 1890-1937. (["Box 5, folder 96"])(1917, n.d.)["Sequences," typescript carbon]. https://collections.library.yale.edu/catalog/16586540.