MLA
Clarkson. A Portrait of Two African American Women in Dresses, with One Sitting Facing Sideways. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/327mpg4f6s-cor.
APA, 6th edition
C. A portrait of two African American women in dresses, with one sitting facing sideways (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/327mpg4f6s-cor.
Chicago
Clarkson. “A Portrait of Two African American Women in Dresses, with One Sitting Facing Sideways.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/327mpg4f6s-cor.