MLA
Galleries, Brady's National Photographic Portrait. United States Secretary of War Edwin Stanton. E. and H. T. Anthony, 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 22, Folder 45. https://digital.library.emory.edu/purl/378tb2rct4-cor.
APA, 6th edition
Galleries, B. N. P. P. (1862). United States Secretary of War Edwin Stanton (Box 22, Folder 45) [Cartes-de-visite (card photographs)]. E. and H. T. Anthony; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/378tb2rct4-cor.
Chicago
Galleries, Brady's National Photographic Portrait. “United States Secretary of War Edwin Stanton.” Cartes-de-visite (card photographs). Civil War Collection. New York City, NY: E. and H. T. Anthony, 1862. Box 22, Folder 45. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/378tb2rct4-cor.