MLA
Ricks. Way down in Dixie : Large African American Man, Cutting into a Pumpkin. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/798mcvdngz-cor.
APA, 6th edition
R. Way down in Dixie : large African American man, cutting into a pumpkin (Box 69) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdngz-cor.
Chicago
Ricks. “Way down in Dixie : Large African American Man, Cutting into a Pumpkin.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdngz-cor.