Delaware County Oklahoma (Vacant / Not In Use) has 1 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Hildebrand Mill. Prominent architectural styles found in Delaware Country are .
Hildebrand Mill
(added 1972 - #72001062)
Also known as Beck Mill
10 mi. W of Siloam Springs , https://npgallery.nps.gov/AssetDetail/NRIS/72001062