MLA
Abraham Lincoln Entering Richmond, Va., Apr. 4, 1865 [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/153jwstqnv-cor.
APA, 6th edition
Abraham Lincoln entering Richmond, Va., Apr. 4, 1865 [hand colored] (Box 70). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/153jwstqnv-cor.
Chicago
“Abraham Lincoln Entering Richmond, Va., Apr. 4, 1865 [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/153jwstqnv-cor.