MLA

Simpson, Randolph Linsly, 1927-1992. Anderson's, Houston, TX Three quarter length double portrait; lady standing with hand on shoulder of gentleman, seated left. Cabinet photograph. Box 9, folder 248. circa 1875. https://collections.library.yale.edu/catalog/2002300.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 248"])(circa 1875)[Anderson's, Houston, TX Three quarter length double portrait; lady standing with hand on shoulder of gentleman, seated left. Cabinet photograph]. https://collections.library.yale.edu/catalog/2002300.