MLA

Simpson, Randolph Linsly, 1927-1992. R.C. Watkins, Pittsfield, MA Cameo portrait of older man with graying moustache and beard, looking right. Cabinet photograph. Box 9, folder 234. circa 1898. https://collections.library.yale.edu/catalog/2002286.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 234"])(circa 1898)[R.C. Watkins, Pittsfield, MA Cameo portrait of older man with graying moustache and beard, looking right. Cabinet photograph]. https://collections.library.yale.edu/catalog/2002286.