Gem City Duelists Society
| Country | United States |
| State | Ohio |
| City | Dayton |
| Website | https://www.gemcityhema.com/ |
| https://www.facebook.com/groups/GemCityHEMA/ |
| Country | United States |
| State | Ohio |
| City | Dayton |
| Website | https://www.gemcityhema.com/ |
| https://www.facebook.com/groups/GemCityHEMA/ |