MLA
Moody, E. N. Study in Black & White, Clarksville, Mo. : African America Boy on a Cart. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/389280gb7d-cor.
APA, 6th edition
Moody, E. N. Study in black & white, Clarksville, Mo. : African America boy on a cart (Box 72) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/389280gb7d-cor.
Chicago
Moody, E. N. “Study in Black & White, Clarksville, Mo. : African America Boy on a Cart.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/389280gb7d-cor.