MLA
Planting Cotton : Plowing : Negro Cabin, Montgomery Ala. : Picking Cotton : Cotton Bales. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/631cjsxkvk-cor.
APA, 6th edition
Planting cotton : plowing : negro cabin, Montgomery Ala. : picking cotton : cotton bales (Box 71). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/631cjsxkvk-cor.
Chicago
“Planting Cotton : Plowing : Negro Cabin, Montgomery Ala. : Picking Cotton : Cotton Bales.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/631cjsxkvk-cor.