| Barrie Historical Archive, Mailing Address | Barrie |
| Barrie Sports Hall of Fame Society | Barrie |
| Base Borden Military Museum | Adjala-Tosorontio |
| Billy Bishop Museum | Owen Sound |
| Blue Mountains Public Library (The), Craigleith Heritage Depot | Blue Mountains |
| Boyd Heritage Museum, Boyd Museum | Bobcaygeon |
| Brocksden Country School Museum | Perth East |
| Bruce County Museum & Cultural Centre | Saugeen Shores |
| Canadian Baseball Hall of Fame and Museum | St Marys |
| Canadian Veterans Museum Association | Blue Mountains |
| Coldwater Museum | Severn |
| Collingwood. Municipal Office, Collingwood - St Paul St, Parks Recreaction and Culture - Collingwood Museum | Collingwood |
| Community Waterfront Heritage Centre | Owen Sound |
| Dorset Heritage Museum | Dorset |
| Dufferin County., Museum of Dufferin | Mulmur |
| Dysart et al. Municipal Office, Haliburton - Maple Ave, Parks & Recreation Department | Haliburton |
| Edenvale Classic Aircraft Foundation | Clearview (Simcoe County) |
| Friends of Penetanguishene Centennial Museum | Penetanguishene |
| Grey and Simcoe Foresters Regimental Museum | Barrie |
| Grey County., Grey Roots Museum & Archives | Owen Sound |
| Grey Highlands Museum | Grey Highlands |
| Huron County. Municipal Office, Huron County Museum | Goderich |
| Huronia Historical Parks, Sainte-Marie Among The Hurons | Midland |
| Huronia Museum and Huron-Ouendat Village | Midland |
| Kincardine Lighthouse Museum | Kincardine |
| Lang Pioneer Village Museum | Otonabee-South Monaghan |
| Leacock Museum National Historic Site | Orillia |
| Magnetawan Heritage Museum Centre, Magnetawan, Magnetawan Heritage Centre | Magnetawan |
| Meaford. Municipal Office, Meaford Museum (The) | Meaford |
| Museum on the Boyne | New Tecumseth |
| Muskoka Heritage Place, Pioneer Village and Muskoka Museum | Huntsville |
| Muskoka Lakes Museum | Muskoka Lakes Township |
| Muskoka Steamships & Discovery Centre, Gravenhurst - Steamship Bay Rd, Muskoka Discovery Centre | Gravenhurst |
| Ontario Provincial Police, OPP Museum, Orillia - Memorial | Orillia |
| Ontario Science Centre | Toronto Downtown |
| Ontario. Ministry of Environment, Conservation and Parks, Woodview, Ontario Parks - Petroglyphs Provincial Park | North Kawartha |
| Orillia Museum of Art and History (The) | Orillia |
| Osprey Museum | Grey Highlands |
| Penetanguishene Centennial Museum and Archives, Penetanguishene Centennial Museum | Penetanguishene |
| Penetanguishene Memorial Community Centre, Sports Hall of Fame, Penetanguishene Sports Hall of Fame | Penetanguishene |
| Peterborough Historical Society, Hutchison House Museum | Peterborough |
| Port Hope and District Historical Society, Dorothy's House Museum | Port Hope (Municipality of) |
| Royal Canadian Legion, Midland Branch 80 - Gloucester St, Ken Snider Memorial Museum | Midland |
| Save Our Heritage Organization, Proctor House Museum. Proctor Simpson Barn | Brighton (Municipality of) |
| Sheffield Park Black History and Cultural Museum | Blue Mountains |
| Simcoe County Museum | Minesing |
| Sir Frederick Banting Legacy Foundation, Banting Homestead Heritage Park, Diabetes Management and Education Centre | New Tecumseth |
| St. Marys Museum and Archives, St Marys Museum and Archive | St Marys |
| Stanhope Heritage Museum, Stanhope Museum | Algonquin Highlands |
| Stratford Perth Museum | Stratford |
| The Canadian Canoe Museum, Canadian Canoe Museum | Peterborough |
| Tree Museum (The) | Gravenhurst |
| West Parry Sound District Museum | Parry Sound |
| Wiseman's Corner Schoolhouse, Burk's Falls and District Museum | Burk's Falls |