MLA
Valentine, and Sons. A Southern Piccaninny : an African American Girl Toddler Holding a Doll, with a Dog behind Her [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/658pc866wd-cor.
APA, 6th edition
V., & S. A southern piccaninny : an African American girl toddler holding a doll, with a dog behind her [hand colored] (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/658pc866wd-cor.
Chicago
Valentine, and Sons. “A Southern Piccaninny : an African American Girl Toddler Holding a Doll, with a Dog behind Her [Hand Colored].” Photographic 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/658pc866wd-cor.