MLA
A Circus Day : an African American Family Ready to Go to the Circus. 1916. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/412z34tms5-cor.
APA, 6th edition
A circus day : an African American family ready to go to the circus (Box 69). (1916). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/412z34tms5-cor.
Chicago
“A Circus Day : an African American Family Ready to Go to the Circus.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1916. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/412z34tms5-cor.