Below is a complete listing of all Ohio Historical Markers. To find a detailed marker listing including text, photographs, and locations, click on a county below. Our listing is updated by the markers program as new markers are installed and older markers are reported damaged or missing.
NOTE: Created in conjunction with #127-18 (B) this marker lets visitors to the Glenn Research Center know that they are entering the historic district of the campus. The area is restricted and visitors can view the marker during a Saturday Facility or Lewis Field Historic District Tour.