MLA

Dreier, Katherine S. (Katherine Sophie), 1877-1952. Clippings. Box 88, folder 2272. 1926-27. https://collections.library.yale.edu/catalog/2014502.

APA, 6th edition

Dreier, Katherine S. (Katherine Sophie), 1877-1952. (["Box 88, folder 2272"])(1926-27)[Clippings]. https://collections.library.yale.edu/catalog/2014502.