MLA
Divald, Richard. Virgin Islands Rural Scene : Two Donkey, with a Boy Sitting on One. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 77. https://digital.library.emory.edu/purl/044bnzs7hq-cor.
APA, 6th edition
Divald, R. Virgin Islands rural scene : two donkey, with a boy sitting on one (Box 77) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/044bnzs7hq-cor.
Chicago
Divald, Richard. “Virgin Islands Rural Scene : Two Donkey, with a Boy Sitting on One.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 77. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/044bnzs7hq-cor.