MLA
Photochrom., C. T. Uncle Tom's Cabin in Dixieland : with an African American Man and Woman Outside. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/296wwpzgpf-cor.
APA, 6th edition
Photochrom., C. T. Uncle Tom's cabin in Dixieland : with an African American man and woman outside (Box 71) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/296wwpzgpf-cor.
Chicago
Photochrom., C. T. “Uncle Tom's Cabin in Dixieland : with an African American Man and Woman Outside.” 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/296wwpzgpf-cor.