Names
- Clements Library1
- Cleveland, Cincinnati, Chicago, and St. Louis Railway Company.1
- Cleveland-Cliffs Iron Company.1
- Clifton House1
- Cobbs & Mitchell.1
- Collin's Wolverine Inn1
- Columbus, Chicago and Indiana Central Railway Company.1
- Community, Hall1
- Conely1
- Congden Street1
- Congdon1
- Congregational Church1
- Congress Hotel1
- Conlin1
- Conrad1
- Cook1
- Cook & Shannon Blacksmith1
- Cook Spring Building1
- Cook's Food Products1
- Cook's Sign Painters1