MLA
Co., Hartman Card. Taking Home a Souvenir of the Sunshine State, Florida [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/39995x69t1-cor.
APA, 6th edition
Co., H. C. Taking home a souvenir of the sunshine state, Florida [hand colored] (Box 69) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/39995x69t1-cor.
Chicago
Co., Hartman Card. “Taking Home a Souvenir of the Sunshine State, Florida [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/39995x69t1-cor.