MLA
Ahrens, Henry H. Aunt Jane Formerly a Dixie Slave, over 105 Years Old, Darien, Ga. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/187pnvx0n6-cor.
APA, 6th edition
Ahrens, H. H. Aunt Jane formerly a Dixie slave, over 105 years old, Darien, Ga. (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/187pnvx0n6-cor.
Chicago
Ahrens, Henry H. “Aunt Jane Formerly a Dixie Slave, over 105 Years Old, Darien, Ga.” 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/187pnvx0n6-cor.