MLA

Stein, Gertrude, 1874-1946. Typescript copy, corrected. Box 69, folder 1241. n.d.. https://collections.library.yale.edu/catalog/17105713.

APA, 6th edition

Stein, Gertrude, 1874-1946. (["Box 69, folder 1241"])(n.d.)[Typescript copy, corrected]. https://collections.library.yale.edu/catalog/17105713.