MLA
Shields, J. A Negro Baptizin at Natchez, Miss. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/071ngf1vk9-cor.
APA, 6th edition
Shields, J. A negro Baptizin at Natchez, Miss. (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/071ngf1vk9-cor.
Chicago
Shields, J. “A Negro Baptizin at Natchez, Miss.” 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/071ngf1vk9-cor.