MLA
Kishpaugh, R. A. Old Slave Block in Fredericksburg, Virginia, with Albert Crutchfield Standing on the Street Corner. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/064tht76m8-cor.
APA, 6th edition
Kishpaugh, R. A. Old slave block in Fredericksburg, Virginia, with Albert Crutchfield standing on the street corner (Box 74) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/064tht76m8-cor.
Chicago
Kishpaugh, R. A. “Old Slave Block in Fredericksburg, Virginia, with Albert Crutchfield Standing on the Street Corner.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/064tht76m8-cor.