MLA
A Miami Kid : an African American Baby, in a Diaper, Who Is Sitting Up. 1904. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/668x95x6d5-cor.
APA, 6th edition
A Miami kid : an African American baby, in a diaper, who is sitting up (Box 72). (1904). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/668x95x6d5-cor.
Chicago
“A Miami Kid : an African American Baby, in a Diaper, Who Is Sitting Up.” Postcards. Robert Langmuir African American Photograph Collection, 1904. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/668x95x6d5-cor.