MLA
Leach, Dixie W. The South That Is No More : a Woman Sitting on a Set of Stairs, with Her Arms around an African American Womans' Shoulders [Hand Colored]. 1908. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/037hqbzkjk-cor.
APA, 6th edition
Leach, D. W. (1908). The South that is no more : a woman sitting on a set of stairs, with her arms around an African American womans' shoulders [hand colored] (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/037hqbzkjk-cor.
Chicago
Leach, Dixie W. “The South That Is No More : a Woman Sitting on a Set of Stairs, with Her Arms around an African American Womans' Shoulders [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, 1908. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/037hqbzkjk-cor.