MLA
Galleries, Brady's National Photographic Portrait. Union Admiral Samuel Francis Du Pont. E. Anthony, 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 22, Folder 11. https://digital.library.emory.edu/purl/7719kd52jw-cor.
APA, 6th edition
Galleries, B. N. P. P. (1861). Union admiral Samuel Francis Du Pont (Box 22, Folder 11) [Cartes-de-visite (card photographs)]. E. Anthony; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7719kd52jw-cor.
Chicago
Galleries, Brady's National Photographic Portrait. “Union Admiral Samuel Francis Du Pont.” Cartes-de-visite (card photographs). Civil War Collection. New York City, NY: E. Anthony, 1861. Box 22, Folder 11. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7719kd52jw-cor.