MLA
Mark, M. Chipping the Pine Tree & Dipping Gum on Turpine Farm in Florida. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 75. https://digital.library.emory.edu/purl/699n2z34x0-cor.
APA, 6th edition
Mark, M. Chipping the pine tree & dipping gum on turpine farm in Florida (Box 75) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34x0-cor.
Chicago
Mark, M. “Chipping the Pine Tree & Dipping Gum on Turpine Farm in Florida.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 75. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34x0-cor.