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1.4.47, Entrance and keeper's house, Antietam National Cemetery, Sharpsburg, Maryland, circa 1907-1910, Box: 4. Institute of American Deltiology Postcard collection, 0007-MDHC. Special Collections and University Archives. https://archives.lib.umd.edu//repositories/2/archival_objects/577888 Accessed September 23, 2021.