MLA
Co., Gust Feist. Loading Cotton, Galveston, Tex. [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/000000002z-cor.
APA, 6th edition
Co., G. F. Loading cotton, Galveston, Tex. [hand colored] (Box 68) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/000000002z-cor.
Chicago
Co., Gust Feist. “Loading Cotton, Galveston, Tex. [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/000000002z-cor.