MLA

Simpson, Randolph Linsly, 1927-1992. J.I. Mumper, Steelton, PA Cameo portrait; woman with big collar looking left. Cabinet photograph. Box 9, folder 189. circa 1890. https://collections.library.yale.edu/catalog/2002241.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 189"])(circa 1890)[J.I. Mumper, Steelton, PA Cameo portrait; woman with big collar looking left. Cabinet photograph]. https://collections.library.yale.edu/catalog/2002241.