MLA
Company., American News. The Home of the Late Henry Flagler, Noted Florida Developer and Pioneer Railroad Builder, Now Part of Whitehall Hotel, Palm Beach, Florida. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/11615dv438-cor.
APA, 6th edition
Company., A. N. The home of the late Henry Flagler, noted Florida developer and pioneer railroad builder, now part of Whitehall Hotel, Palm Beach, Florida (Box 71) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/11615dv438-cor.
Chicago
Company., American News. “The Home of the Late Henry Flagler, Noted Florida Developer and Pioneer Railroad Builder, Now Part of Whitehall Hotel, Palm Beach, Florida.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/11615dv438-cor.