Anderson Galleries, Inc.
MLA
Dreier, Katherine S. (Katherine Sophie), 1877-1952. Anderson Galleries, Inc.. Box 2, folder 48. 1920-28, n.d.. https://collections.library.yale.edu/catalog/16694403.
APA, 6th edition
Dreier, Katherine S. (Katherine Sophie), 1877-1952. (["Box 2, folder 48"])(1920-28, n.d.)[Anderson Galleries, Inc.]. https://collections.library.yale.edu/catalog/16694403.