National Historic Register properties in Delaware county/parish, Ohio
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Building at 101 North Franklin Street (Ashley)
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Building at 223 West High Street (Ashley)
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Building at 500 East High Street (Ashley)
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Building at 505 East High Street (Ashley)
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Sharp, Samuel, House (Ashley)
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Austin Hall (Delaware)
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Bieber, George, House and Farm (Delaware)
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Cleveland, Columbus, Cincinnati & Indianapolis Railroad Depot (Delaware)
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Crist Tavern Annex-Millworkers Boarding House (Delaware)
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Delaware County Courthouse (Delaware)
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Delaware County Jail and Sheriff's Residence (Delaware)
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Delaware Post Office (Delaware)
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Delaware Public Library (Delaware)
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Edwards Gymnasium/Pfieffer Natatorium (Delaware)
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Elliott Hall, Sturges Library, And Merrick Hall (Delaware)
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Greenwood Farm (Delaware)
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High House (Delaware)
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Historic Northwest District (Delaware)
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Limestone Vale (Delaware)
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Meeker, Forrest, House and Farm (Delaware)
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Mill Worker House No. 1 (Delaware)
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Mill Worker House No. 3 (Delaware)
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Mill Worker House No. 4 (Delaware)
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Mill Worker House No. 5 (Delaware)
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Monnett Hall (Delaware)
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Neff, Edward E., House (Delaware)
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Ohio Wesleyan University Fraternity Hill Historic District (Delaware)
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Ohio Wesleyan University Student Observatory (Delaware)
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Perry, Norman Dewey, House (Delaware)
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Richey, James, Farmhouse (Delaware)
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Sanborn Hall (Delaware)
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Sandusky Street Historic District (Delaware)
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Selby Field (Delaware)
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Slocum Hall (Delaware)
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St. Mary's Church and Rectory (Delaware)
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Stratford Methodist Episcopal Church (Delaware)
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Stuyvesant Hall (Delaware)
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Ufferman Site (Delaware)
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University Hall-Gray's Chapel (Delaware)
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Van Deman, Henry, House (Delaware)
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Warren Tavern Complex (Delaware)
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Curtiss, Marcus, Inn (Galena)
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Keeler, Diadatus, House (Galena)
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Spruce Run Earthworks (Galena)
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Cook, John, Farm (Harlem)
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Chambers Road Covered Bridge (Olive Green)
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Gooding House and Tavern (Orange Township)
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Felkner-Anderson House (Ostrander)
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Highbanks Metropolitan Park Mounds I and II (Powell)
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West Orange Road-Thomas Bridge (Powell)
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Baker, John, Tavern (Radnor)
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Cooper, Samuel, Farmhouse (Radnor)
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Detwiller, John, Tavern and Farmstead (Radnor)
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Lewis, Samuel, Farmhouse (Radnor)
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Radnor Township Hall (Radnor)
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O'Shaughnessy Dam and Bridge (Shawnee Hills)
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Center Inn (Sunbury)
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Sunbury Tavern (Sunbury)
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Sunbury Town Hall (Sunbury)
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Sharp, Stephen, House (Westerville)
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Highbank Park Works (Worthington)