MLA

Gregory, Alyse, 1882-1967. Curry, Madeleine Walker. Box 13, folder 222-228. 1939-57, n.d.. https://collections.library.yale.edu/catalog/17072593.

APA, 6th edition

Gregory, Alyse, 1882-1967. (["Box 13, folder 222-228"])(1939-57, n.d.)[Curry, Madeleine Walker]. https://collections.library.yale.edu/catalog/17072593.