MLA
Co., Philadelphia Post Card. Natchez, Miss., a Colored Baptisin' [Hand Colored]. 1906. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/8601zcrjh4-cor.
APA, 6th edition
Co., P. P. C. (1906). Natchez, Miss., a colored Baptisin' [hand colored] (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8601zcrjh4-cor.
Chicago
Co., Philadelphia Post Card. “Natchez, Miss., a Colored Baptisin' [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, 1906. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8601zcrjh4-cor.