MLA
Hill, Wally. Red Brick House with Slave Quarters, Biloxi, Mississippi. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/262s4mw6pp-cor.
APA, 6th edition
Hill, W. Red brick house with slave quarters, Biloxi, Mississippi (Box 74) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/262s4mw6pp-cor.
Chicago
Hill, Wally. “Red Brick House with Slave Quarters, Biloxi, Mississippi.” Photographic 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/262s4mw6pp-cor.