- Conservation Commission of West Virginia. Division of Forestry.1
- Conservation Commission of West Virginia. Division of Game and Fish.1
- Consolidated Gas Supply Corporation (Clarksburg, W. Va.)2
- Consolidated Recreation Commission (Morgantown, W. Va.)1
- Consolidation Coal Company.4
- Consolidation Coal Company. Northern West Virginia Region.1
- Contentment Historical Complex (Ansted, W. Va.)1
- Continental Can Company.3
- Continental Group (Firm)1
- Continental Publishing Company (Wheeling, W. Va.)1
- Convention and Visitors Bureau of Marion County (Fairmont, W. Va.)3
- Conway Research, Inc.1
- Cook, Anna Lue.1
- Cook, Katherine M. (Katherine Margaret)1
- Cook, Kermit A.1
- Cook, Lewis A.1
- Cook, Roy Bird, 1886-1
- Cook, William C.3
- Cooke, William Mordecai, 1823-1863.1
- Cooper Gallery (Lewisburg, W. Va.)1
