MLA

Anderson, Margaret C., 1886-1973. Places. Box 21, folder 380-387. 1955-circa 1979. https://collections.library.yale.edu/catalog/16397732.

APA, 6th edition

Anderson, Margaret C., 1886-1973. (["Box 21, folder 380-387"])(1955-circa 1979)[Places]. https://collections.library.yale.edu/catalog/16397732.