| Bayfield Historical Society, Archives & Heritage Centre, Bayfield Historical Society & Archives | Bluewater |
| Beautiful Joe Heritage Society | Meaford |
| Belmont Methuen and Havelock Historical Society, Mailing Address only | Havelock |
| Bruce County Historical Society | Southampton |
| Campbellford-Seymour Heritage Society | Trent Hills |
| Cobourg and District Historical Society | Cobourg |
| Collingwood and District Historical Society | Collingwood |
| Essa Historical Society | Utopia |
| Hastings Historical Society | Trent Hills |
| Huron County Historical Society | Goderich |
| Huronia Museum and Huron-Ouendat Village, Museum | Midland |
| Innisfil Historical Society | Innisfil |
| Lakefield Historical Society, Lakefield Historical Society | Lakefield |
| Marine Heritage Society and Propeller Club | Saugeen Shores |
| Millbrook Cavan Historical Society | Cavan Monaghan |
| Peterborough Historical Society | Peterborough |
| Simcoe County Historical Association | Barrie |
| Sparrow Lake Historical Society | Severn |
| St Joseph and Area Historical Society, St. Joseph Memorial Park | Bluewater |
| Stayner Heritage Society | Clearview (Simcoe County) |
| Stratford Perth Heritage Foundation, Fryfogel Arboretum | Perth East |
| Stratford Perth Heritage Foundation, Fryfogel Tavern Restoration Project | Perth East |
| Stratford Perth Heritage Foundation | Perth East |
| Stratford Perth Museum | Stratford |
| Tecumseth and West Gwillimbury Historical Society | Bradford West Gwillimbury |