MLA

Simpson, Randolph Linsly, 1927-1992. Jacob Stealey, Weston, WV Three quarter length portrait; black caregiver wearing white cap, seated with white child on lap. Cabinet photograph. "James Maxwell Bennett, January 1st, 1891" in ink, verso. Box 9, folder 207. 1891 January 1. https://collections.library.yale.edu/catalog/2002259.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 207"])(1891 January 1)[Jacob Stealey, Weston, WV Three quarter length portrait; black caregiver wearing white cap, seated with white child on lap. Cabinet photograph. "James Maxwell Bennett, January 1st, 1891" in ink, verso]. https://collections.library.yale.edu/catalog/2002259.