MLA
Tuck, Raphael, and Sons. St. Augustine, Fla. : Treasury Street, the Narrowest Street in the U.S. 1917. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/170msbcc5j-cor.
APA, 6th edition
Tuck, R., & S. (1917). St. Augustine, Fla. : Treasury Street, the narrowest street in the U.S. (Box 71) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/170msbcc5j-cor.
Chicago
Tuck, Raphael, and Sons. “St. Augustine, Fla. : Treasury Street, the Narrowest Street in the U.S.” Postcards. Robert Langmuir African American Photograph Collection, 1917. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/170msbcc5j-cor.