| cakes | candy | candy retail |
| canned soft drinks | canvas products | canvas products manufacturers |
| carpentry work | carpet & rug dealers | carpet cleaners |
| carpet cleaning | carpet manufacturer | carpet new |
| car polishing | car rental | car washes |
| car washing | cash register | cash supplies |
| catalog | caterers | cellular telephones |
| cellular telephone service | cement | cement manufacturers |
| cement wholesale | cemetery | certified public accountants |
| cheap hotels | check cashing services | chemistry products |
| chemistry products manufacturers | child care services | child day care services |
| children's clothing | children's vehicles | chinese restaurant |
| chiropractic clinic | chiropractor | christian school |
| churches | cigar cigarette | cigar cigarette-wholesale |
| cigar cigarette retail | cigarette | cigars |
| civic associations | civil engineers | cleaners |
| cleaners' agents | clean up services | clinic |
| clinical psychologists | clinical trials | clinics of chiropractors |
| clinics of dentists | clinics of medical doctors | clinics of optometrists |
| clinics of podiatrists | clocks | coating manufacturer |
| coatings | coatings protective | coatings protective manufacturers |
| coin-operated amusement devices | coin-operated drycleaning | coin operated laundry |
| coins | cold storage warehouse | collection agency |
| collection service | college | colleges academic |
| college university | colon rectal surgeons | colon surgeons |
| commercial art | commercial banks | commercial photography |
| commercial physical research | commercial printing | commodity brokers |
| commodity dealers | commodity exchange | commodity services |
| communication services | community development | component retail |
| computer consultants | computer electronics | computer integrated systems design |
| computer maintenance | computer manufacturers | computer related services |
| computer repair | computers electronic manufacturers | computer services |
| computers system designers | computer storage devices | computer stores |
| computer technology schools | concrete blocks | concrete contractors |
| concrete manufacturer | concrete products | concrete products-ex block |
| concrete products manufacturers | concrete work | confectionery |
| confectionery retail | construction equipment manufacturers | construction machinery |
| construction machinery manufacturers | construction management | construction materials |
| consulting engineers | contractors manufacturers | control panel manufacturer |
| controls manufacturers | control systems manufacturers | control systems regulators manufacturers |
| convalescent homes | cookies manufacturers | copier repair |
| copiers | corn chips | corn snacks |
| correctional institution | corrugated boxes | corrugated box manufacturer |
| cosmetic dentist | cosmetic dentistry | cosmetic manufacturer |
| cotton | cotton gin | cotton goods |
| cottonseed oil mills | county government-courts | county government public order |
| county government safety | courier service | court |
| court reporting | cracker manufacturers | crating |
| credit reporting services | credit union | crematory |
| criminal law attorney | croissant | crop protection |
| crude petroleum | crude petroleum pipelines | curtains |
| curtains retail stores | custom computer programming services | custom made curtains |
| custom made draperies |
