MLA
Robinson, W. A. A Little African American Girl Standing on Steps Holding Doll. 1890. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 61. https://digital.library.emory.edu/purl/713905qfxr-cor.
APA, 6th edition
Robinson, W. A. (1890). A little African American girl standing on steps holding doll (Box 61) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/713905qfxr-cor.
Chicago
Robinson, W. A. “A Little African American Girl Standing on Steps Holding Doll.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, 1890. Box 61. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/713905qfxr-cor.