MLA

Herbst, Josephine, 1892-1969. Artwork. Box 111. 1866-1969, undated. https://collections.library.yale.edu/catalog/2005546.

APA, 6th edition

Herbst, Josephine, 1892-1969. (["Box 111"])(1866-1969, undated)[Artwork]. https://collections.library.yale.edu/catalog/2005546.