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    National Historic Register properties in Ottawa, Illinois

    • Fisher-Nash-Griggs House
    • Hossack, John, House
    • Knuessl Building
    • O'Conor, Andrew J., III, House
    • Old Kaskaskia Village
    • Ottawa Commercial Historic District
    • Ottawa East Side Historic District
    • Starved Rock
    • Starved Rock Lock and Dam Historic District
    • Strawn, Jeremiah, House
    • Washington Park Historic District