MLA
Horace Foster Jr. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/525k98sf9z-cor.
APA, 6th edition
Horace Foster Jr. (Box 74). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/525k98sf9z-cor.
Chicago
“Horace Foster Jr.” 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/525k98sf9z-cor.