MLA
Coleman. African American Men, Women and Children Picking Cotton in a Cotton Field, Carrying Large Baskets. 1903. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/52908kprv0-cor.
APA, 6th edition
C. (1903). African American men, women and children picking cotton in a cotton field, carrying large baskets (Box 68) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52908kprv0-cor.
Chicago
Coleman. “African American Men, Women and Children Picking Cotton in a Cotton Field, Carrying Large Baskets.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1903. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52908kprv0-cor.