MLA
Stewart. African American Woman Sitting on a Chair While Wearing a Dress. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/6558cz8wd2-cor.
APA, 6th edition
S. African American woman sitting on a chair while wearing a dress (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6558cz8wd2-cor.
Chicago
Stewart. “African American Woman Sitting on a Chair While Wearing a Dress.” 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/6558cz8wd2-cor.