- Central Hotel (Webster County, W. Va.)1
- Central Junior High School (Clarksburg, W. Va.)1
- Central Preston County Senior High School (Preston County, W. Va.)1
- Chesapeake and Ohio Railway Company.1
- Chilson and Claytor Livery and Boarding Stable (Fairmont, W. Va.)1
- Church of the United Brethren in Christ (1800-1889)1
- Cincinatti (Steamboat)1
- Citizens Bakery (Clarksburg, W. Va.)1
- Clarksburg High School (Clarksburg, W. Va.)4
- Clarksburg-Harrison Public Library (Clarksburg, W. Va.)1
- Claude Worthington Benedum Foundation.1
- Clearlite Fourco Glass Company.1
- Commercial Hotel (Bridgeport, W. Va.)1
- Commercial Hotel (Richwood, W. Va.)1
- Commercial china--West Virginia--Grafton.1
- Consolidation Coal Company.1
- Court Theatre (Wheeling, W. Va.)1
- Crescent Window Glass Company (Weston, W. Va.)1
- Crosby's Jewelers (Clarksburg, W. Va.)1
- Davis Coal and Coke Company.1