MLA
Watson, D. I., and Son. A Negro Cabin near Aiken, S.C. [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/354xgxd26t-cor.
APA, 6th edition
Watson, D. I., & S. A Negro cabin near Aiken, S.C. [hand colored] (Box 71) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/354xgxd26t-cor.
Chicago
Watson, D. I., and Son. “A Negro Cabin near Aiken, S.C. [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/354xgxd26t-cor.