MLA
Attewell, H. E. I'm Jiggered : Two Boys Sitting on the Ground. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 76. https://digital.library.emory.edu/purl/6042rbnzt0-cor.
APA, 6th edition
Attewell, H. E. I'm jiggered : two boys sitting on the ground (Box 76) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6042rbnzt0-cor.
Chicago
Attewell, H. E. “I'm Jiggered : Two Boys Sitting on the Ground.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 76. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6042rbnzt0-cor.