MLA
Hirschwitz, A. Yas Suh, of Course, I'Se Happy down South [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/8945qftth5-cor.
APA, 6th edition
Hirschwitz, A. Yas suh, of course, I'se happy down South [hand colored] (Box 72) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8945qftth5-cor.
Chicago
Hirschwitz, A. “Yas Suh, of Course, I'Se Happy down South [Hand Colored].” 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/8945qftth5-cor.