| Akron-Canton-Youngstown Division |
Ohio, USA |
| Black Swamp Division |
MI & OH, USA |
| Buckeye Division |
Ohio, USA |
| Cincinnati Division |
IN, KY, & OH, USA |
| Coal Division |
KY, OH, & WV, USA |
| Cuyahoga Valley and West Shore Model Railroad Club |
Olmstead Falls, Ohio, USA |
| Great Lakes Division of the TCA |
IN, KY, MI, OH, & ON, USA & Canada |
| Keystone Division |
OH, PA, & WV, USA |
| Lake Erie Chapter of the Train Collector's Association |
Ohio, USA |
| Marion Model Railroad Club |
Marion, Ohio, USA |
| Miami Valley Division |
IN & OH, USA |
| Montpelier Trackside Modelers |
Montpelier, Ohio, USA |
| NMRA Mid-Central Region |
IN, KY, NY, OH, PA, & WV, USA |
| NMRA North Central Region |
IN, MI, & OH, USA |
| North Coast Division |
Ohio, USA |
| Ohio River Chapter of the TCA |
Ohio, USA |
| Three Rivers Division |
IN & OH, USA |
| Western Reserve Division |
Ohio, USA |
| Youngstown Model Railroad Association |
Youngstown, Ohio, USA |
