MLA
Oliver, Paul. The Oldest Wooden Schoolhouse in U.S., St. Augustine, Florida. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 75. https://digital.library.emory.edu/purl/170msbcc4n-cor.
APA, 6th edition
Oliver, P. The oldest wooden schoolhouse in U.S., St. Augustine, Florida (Box 75) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/170msbcc4n-cor.
Chicago
Oliver, Paul. “The Oldest Wooden Schoolhouse in U.S., St. Augustine, Florida.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 75. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/170msbcc4n-cor.