MLA
Valentine, and Sons. Out in the Woods, Florida : African American Men Playing Cards [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/767wm37q0f-cor.
APA, 6th edition
V., & S. Out in the woods, Florida : African American men playing cards [hand colored] (Box 70) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/767wm37q0f-cor.
Chicago
Valentine, and Sons. “Out in the Woods, Florida : African American Men Playing Cards [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/767wm37q0f-cor.