MLA
Valentine, and Sons. We's a Jolly Fambly! : Two African American Children Holding Puppies [Hand Colored]. 1918. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/112m63xskn-cor.
APA, 6th edition
V., & S. (1918). We's a jolly fambly! : two African American children holding puppies [hand colored] (Box 72) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/112m63xskn-cor.
Chicago
Valentine, and Sons. “We's a Jolly Fambly! : Two African American Children Holding Puppies [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, 1918. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/112m63xskn-cor.