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    National Historic Register properties in Warren, Ohio

    • East Market Street School
    • Edwards, John Stark, House
    • Mahoning Avenue Historic District
    • Mahoning Avenue Historic District (Boundary Increase)
    • McLain-Gillmer House
    • Packard, James Ward, House
    • Trumbull County Courthouse
    • Upton, Harriet Taylor, House
    • Warren Commercial Historic District
    • Warren Public Library