MLA
Two Boys and a Dog Paddling in a Boat [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/9182jm642v-cor.
APA, 6th edition
Two boys and a dog paddling in a boat [hand colored] (Box 70). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9182jm642v-cor.
Chicago
“Two Boys and a Dog Paddling in a Boat [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9182jm642v-cor.