MLA
Two African American Women in Dresses and Hats Sitting on a Chair Together, with Two African American Men in Suits and Hats Standing behind Them. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/0278sf7m2h-cor.
APA, 6th edition
Two African American women in dresses and hats sitting on a chair together, with two African American men in suits and hats standing behind them (Box 72). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0278sf7m2h-cor.
Chicago
“Two African American Women in Dresses and Hats Sitting on a Chair Together, with Two African American Men in Suits and Hats Standing behind Them.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0278sf7m2h-cor.