MLA
The pro-Slavery Riot of November 7, 1837, Alton, Ill. : Death of Rev. E.P. Lovejoy, from Woodcut Made in 1838. 1909. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/535t76hdtx-cor.
APA, 6th edition
The pro-slavery riot of November 7, 1837, Alton, Ill. : death of Rev. E.P. Lovejoy, from woodcut made in 1838 (Box 74). (1909). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/535t76hdtx-cor.
Chicago
“The pro-Slavery Riot of November 7, 1837, Alton, Ill. : Death of Rev. E.P. Lovejoy, from Woodcut Made in 1838.” Postcards. Robert Langmuir African American Photograph Collection, 1909. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/535t76hdtx-cor.