Hardin

Historical marker location:

6703 Hardin-Wapakoneta Rd, Sidney, Ohio

( Marker is at the intersection of Hardin-Wapakoneta Road (County Route 20) and St Rt 47 (Ohio Route 47), on the left when traveling north on Hardin-Wapakoneta Road.)

Marker installed: 2001

Turtle Creek Township.

The Ohio River, which forms the state's southern border, played a significant role in the Underground Railroad, a network of secret routes and safe houses used by African American slaves to escape to freedom in the North before the Civil War.