MLA
tribune., National. Rock on Which J.H. Kagi Was Killed. 1909. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/7203xsj3z8-cor.
APA, 6th edition
tribune., N. (1909). Rock on which J.H. Kagi was killed (Box 69) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7203xsj3z8-cor.
Chicago
tribune., National. “Rock on Which J.H. Kagi Was Killed.” Postcards. Robert Langmuir African American Photograph Collection, 1909. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7203xsj3z8-cor.