MLA
Embarrassing : African American Boy in a Hat. 1908. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/102c866t37-cor.
APA, 6th edition
Embarrassing : African American boy in a hat (Box 72). (1908). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/102c866t37-cor.
Chicago
“Embarrassing : African American Boy in a Hat.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1908. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/102c866t37-cor.