Subjects
- Civil service.1
- Coins -- Collectors and collecting.1
- Communism.1
- Communist college teachers.1
- Community service.1
- Compressors.1
- Computers.1
- Confectioners.1
- Congregational churches.1
- Conservation of natural resources -- Michigan.1
- Construction industry -- Michigan -- Detroit.1
- Cookery.1
- Copper mines and mining -- Michigan -- Upper Peninsula.1
- Cornish -- Michigan.1
- Country life.1
- Crime.1
- Curling.1
- Customer relations.1
- Customs inspections.1
- DEW Line.1