MLA
Man in a Suit Standing next to a Sign over a Piano, with a Saxophone and Saw in Front of It. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/525k98sf9q-cor.
APA, 6th edition
Man in a suit standing next to a sign over a piano, with a saxophone and saw in front of it (Box 74). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/525k98sf9q-cor.
Chicago
“Man in a Suit Standing next to a Sign over a Piano, with a Saxophone and Saw in Front of It.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/525k98sf9q-cor.