MLA
Unco, Inc. Up against It. 1931. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/354xgxd282-cor.
APA, 6th edition
Unco, I. (1931). Up against it (Box 69) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/354xgxd282-cor.
Chicago
Unco, Inc. “Up against It.” Postcards. Robert Langmuir African American Photograph Collection, 1931. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/354xgxd282-cor.