MLA
Portrait of Mary Ann Prout. 1938. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/3418kprr77-cor.
APA, 6th edition
Portrait of Mary Ann Prout (Box 74). (1938). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3418kprr77-cor.
Chicago
“Portrait of Mary Ann Prout.” Postcards. Robert Langmuir African American Photograph Collection, 1938. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3418kprr77-cor.