Cite

[Bridge, unidentified]

MLA

Dreier, Katherine S. (Katherine Sophie), 1877-1952. [Bridge, unidentified]. Box 71, folder 1821. n.d.. https://collections.library.yale.edu/catalog/17047956.

APA, 6th edition

Dreier, Katherine S. (Katherine Sophie), 1877-1952. (["Box 71, folder 1821"])(n.d.)[[Bridge, unidentified]]. https://collections.library.yale.edu/catalog/17047956.