MLA

Simpson, Randolph Linsly, 1927-1992. Pritchard, 400 Broadway, Saratoga, NY Cameo portrait of Mrs. Thomas Pennington; lady with black pleated dress and cap. Carte de visite. Box 11, folder 436. circa 1875. https://collections.library.yale.edu/catalog/2003921.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 436"])(circa 1875)[Pritchard, 400 Broadway, Saratoga, NY Cameo portrait of Mrs. Thomas Pennington; lady with black pleated dress and cap. Carte de visite]. https://collections.library.yale.edu/catalog/2003921.