MLA
Aunt Mandy's Log Cabin, near Augusta, Ga. [Hand Colored] : with an African American Holding a Gun and a Woman Sitting Outside the Cabin. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/815p8cz8zp-cor.
APA, 6th edition
Aunt Mandy's log cabin, near Augusta, Ga. [hand colored] : with an African American holding a gun and a woman sitting outside the cabin (Box 71). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/815p8cz8zp-cor.
Chicago
“Aunt Mandy's Log Cabin, near Augusta, Ga. [Hand Colored] : with an African American Holding a Gun and a Woman Sitting Outside the Cabin.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/815p8cz8zp-cor.