#-A-C
- 103rd Ohio Volunteer Infantry Civil War Museum
- Akron Art Museum
- Allen Memorial Art Museum
- Amherst Historical Society & Sandstone Village
- Artists Archives of the Western Reserve
- Aurora Historical Society
- Bainbridge Township Historical Society
- Baseball Heritage Museum
- Bay Village Historical Society
- Bedford Historical Society and Museum
- Berea Historical Society and Mahler Museum
- Broadview Heights Historical Society
- Brooklyn Historical Society Museum
- Brownhelm Historical Association
- Brunswick Area Historical Society
- Chagrin Falls Historical Society & Museum
- Chesterland Historical Foundation
- Cleveland Botanical Garden
- Cleveland Grays Armory Museum
- Cleveland History Center
- Cleveland Hungarian Heritage Museum
- Cleveland Institute of Art: Reinberger Gallery
- Cleveland Masonic Library and Museum
- Cleveland Metroparks
- Cleveland Metroparks Zoo
- Cleveland Museum of Natural History
- Cleveland Police Museum
- CMA at Transformer Station
- Columbia Historical Society
- Concord Township - Old Stone School
- Copley Township Historical Society
- Cowan Pottery Museum
- Croatian Heritage Museum & Library / Croatian Cultural Garden
- Cuyahoga County Soldiers' and Sailors' Monument
- Cuyahoga Valley Historical Museum
- Cuyahoga Valley National Park
- Cuyahoga Valley Scenic Railroad (CVSR)