MLA
Photochrom., C. T. Rapid Transit in Pensacola, Fla. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/805fbg79gn-cor.
APA, 6th edition
Photochrom., C. T. Rapid transit in Pensacola, Fla. (Box 74) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/805fbg79gn-cor.
Chicago
Photochrom., C.T. “Rapid Transit in Pensacola, Fla.” 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/805fbg79gn-cor.