MLA
Ahrens, Henry H. Too Much Corn in the Land of Cotton : an Old African American Man Sitting down Holding His Stomach and an African American Woman Standing over Him. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/85370rxwhv-cor.
APA, 6th edition
Ahrens, H. H. Too much corn in the land of cotton : an old African American man sitting down holding his stomach and an African American woman standing over him (Box 68) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxwhv-cor.
Chicago
Ahrens, Henry H. “Too Much Corn in the Land of Cotton : an Old African American Man Sitting down Holding His Stomach and an African American Woman Standing over Him.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxwhv-cor.