MLA
Swafford, Karl. The Port of Corpus Christi, Texas. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/716pzgmsg2-cor.
APA, 6th edition
Swafford, K. The port of Corpus Christi, Texas (Box 71) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/716pzgmsg2-cor.
Chicago
Swafford, Karl. “The Port of Corpus Christi, Texas.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/716pzgmsg2-cor.