MLA
Co., Imperial Publishing. An African American Man and Woman in Matching Suits and Hats, Holding Canes. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/228ncjsxp0-cor.
APA, 6th edition
Co., I. P. An African American man and woman in matching suits and hats, holding canes (Box 73) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/228ncjsxp0-cor.
Chicago
Co., Imperial Publishing. “An African American Man and Woman in Matching Suits and Hats, Holding Canes.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/228ncjsxp0-cor.