MLA
Gough, John. The Terrace Room of the Mayo, Tulsa, Oklahoma. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/665h9w0vws-cor.
APA, 6th edition
Gough, J. The Terrace Room of the Mayo, Tulsa, Oklahoma (Box 74) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/665h9w0vws-cor.
Chicago
Gough, John. “The Terrace Room of the Mayo, Tulsa, Oklahoma.” Photographic 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/665h9w0vws-cor.