MLA
Some of the Nationally Famous Southern Mammies at Hoffman's Gettysburg. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/829b5mkm01-cor.
APA, 6th edition
Some of the nationally famous Southern Mammies at Hoffman's Gettysburg (Box 74). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/829b5mkm01-cor.
Chicago
“Some of the Nationally Famous Southern Mammies at Hoffman's Gettysburg.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/829b5mkm01-cor.