MLA
Nelly, an African American Woman in a Dress, Sitting on a Chair, with Ike, an African American Man in Suit, Standing next to Her, with a Bunch of Flowers next to Them. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/552w3r22b7-cor.
APA, 6th edition
Nelly, an African American woman in a dress, sitting on a chair, with Ike, an African American man in suit, standing next to her, with a bunch of flowers next to them (Box 72). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/552w3r22b7-cor.
Chicago
“Nelly, an African American Woman in a Dress, Sitting on a Chair, with Ike, an African American Man in Suit, Standing next to Her, with a Bunch of Flowers next to Them.” Photographic 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/552w3r22b7-cor.