MLA

Dreier, Katherine S. (Katherine Sophie), 1877-1952. Pannaggi, Ivo. [Tannin, Cromin, Chevreaux], advertising poster (in Series V). Box 119, folder 2839. n.d.. https://collections.library.yale.edu/catalog/10521084.

APA, 6th edition

Dreier, Katherine S. (Katherine Sophie), 1877-1952. (["Box 119, folder 2839"])(n.d.)[Pannaggi, Ivo. [Tannin, Cromin, Chevreaux], advertising poster (in Series V)]. https://collections.library.yale.edu/catalog/10521084.