MLA

Simpson, Randolph Linsly, 1927-1992. J.A. Palmer, Aiken, SC Mounted verso, "No. 170. Characteristic Southern Scenes." Photographer's identification. Stereograph, yellow card. Box 12, folder 529. circa 1865. https://collections.library.yale.edu/catalog/2111701.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 12, folder 529"])(circa 1865)[J.A. Palmer, Aiken, SC Mounted verso, "No. 170. Characteristic Southern Scenes." Photographer's identification. Stereograph, yellow card]. https://collections.library.yale.edu/catalog/2111701.