MLA

Simpson, Randolph Linsly, 1927-1992. G.M. Elton, Palmyra, NY Cameo portrait of older lady, large brooch at throat. Cabinet photograph. Box 9, folder 237. circa 1885. https://collections.library.yale.edu/catalog/2002289.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 237"])(circa 1885)[G.M. Elton, Palmyra, NY Cameo portrait of older lady, large brooch at throat. Cabinet photograph]. https://collections.library.yale.edu/catalog/2002289.