MLA
Card, International Post, and Mfg. Co. Levi Coffin Homestead in Fountain City, Ind. : Union Station of the Underground R.R. : Eliza of Uncle Tom's Cabin Was Once Secreted Here. 1909. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 75. https://digital.library.emory.edu/purl/979h44j12j-cor.
APA, 6th edition
Card, I. P., & Co., M. (1909). Levi Coffin Homestead in Fountain City, Ind. : Union Station of the Underground R.R. : Eliza of Uncle Tom's cabin was once secreted here (Box 75) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/979h44j12j-cor.
Chicago
Card, International Post, and Mfg. Co. “Levi Coffin Homestead in Fountain City, Ind. : Union Station of the Underground R.R. : Eliza of Uncle Tom's Cabin Was Once Secreted Here.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1909. Box 75. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/979h44j12j-cor.