MLA
Mattingly, L. F. Noon at Hamburg Place, Lexington, KY : with Two African American Men Sitting on Barrels, One Is Smoking. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/317crjdfq2-cor.
APA, 6th edition
Mattingly, L. F. Noon at Hamburg Place, Lexington, KY : with two African American men sitting on barrels, one is smoking (Box 71) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/317crjdfq2-cor.
Chicago
Mattingly, L. F. “Noon at Hamburg Place, Lexington, KY : with Two African American Men Sitting on Barrels, One Is Smoking.” 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/317crjdfq2-cor.