MLA
Edwards, Robert. Colored M.E. Church, Gainesville, Texas. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/569z08kptw-cor.
APA, 6th edition
Edwards, R. Colored M.E. Church, Gainesville, Texas (Box 74) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/569z08kptw-cor.
Chicago
Edwards, Robert. “Colored M.E. Church, Gainesville, Texas.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/569z08kptw-cor.