MLA
Penn School in St. Helena Island, S.C. : the First School Building for Negroes in the South. 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/1439zw3r4s-cor.
APA, 6th edition
Penn School in St. Helena Island, S.C. : the first school building for negroes in the south (Box 69). (1862). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r4s-cor.
Chicago
“Penn School in St. Helena Island, S.C. : the First School Building for Negroes in the South.” Postcards. Robert Langmuir African American Photograph Collection, 1862. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r4s-cor.