MLA
Montgomery Agricultural Hall at Mississippi A. & M. College. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/610wpzgmxp-cor.
APA, 6th edition
Montgomery Agricultural Hall at Mississippi A. & M. College (Box 69). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgmxp-cor.
Chicago
“Montgomery Agricultural Hall at Mississippi A. & M. College.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgmxp-cor.