MLA
Cahn, Sam. Common Street, Shreveport, La. 1908. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/709w0vt4ff-cor.
APA, 6th edition
Cahn, S. (1908). Common Street, Shreveport, La. (Box 74) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/709w0vt4ff-cor.
Chicago
Cahn, Sam. “Common Street, Shreveport, La.” Postcards. Robert Langmuir African American Photograph Collection, 1908. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/709w0vt4ff-cor.