MLA
Meeker, Ezra. Way down in Old Missouri : African American Family next to an Ox-Drawn Wagon. 1908. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 75. https://digital.library.emory.edu/purl/1439zw3r3z-cor.
APA, 6th edition
Meeker, E. (1908). Way down in old Missouri : African American family next to an ox-drawn wagon (Box 75) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r3z-cor.
Chicago
Meeker, Ezra. “Way down in Old Missouri : African American Family next to an Ox-Drawn Wagon.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1908. Box 75. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r3z-cor.