| cakes | calculating equipment | candy |
| candy manufacturers | candy retail | carpentry work |
| carpet & rug dealers | carpet cleaners | carpet cleaning |
| carpet new | car polishing | car rental |
| carriage | carriage horse | car washes |
| car washing | cash register | catalog |
| caterers | catholic school | cellular telephones |
| cellular telephone service | cement | cemetery |
| cemetery developers | cemetery memorial parks | cemetery subdividers |
| certified public accountants | cheap hotels | check cashing services |
| chemical preparations | child care services | child day care services |
| children's clothing | chinese restaurant | chiropractic clinic |
| chiropractor | chocolate manufacturer | christian school |
| churches | cigar cigarette | cigar cigarette retail |
| cigarette | cigars | citrus fruit |
| city government regulation | city government regulation utilities | 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 |
| clock repair | clocks | coating manufacturer |
| coatings | coatings protective | coatings protective manufacturers |
| cocoa manufacturers | coin-operated amusement devices | coin-operated drycleaning |
| coin operated laundry | coins | cold storage warehouse |
| collection agency | collection service | college |
| colleges academic | colon rectal surgeons | colon surgeons |
| commercial art | commercial laundry equipment | 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 leasing | computer maintenance | computer manufacturers |
| computer peripheral equipment | computer related services | computer rental |
| computer repair | computers electronic manufacturers | computer services |
| computers system designers | computer storage devices | computer stores |
| computer technology schools | concrete blocks | concrete contractors |
| concrete products | concrete work | confectionery |
| confectionery manufacturers | confectionery retail | construction machinery |
| construction management | construction materials | consulting engineers |
| controls manufacturers | control systems manufacturers | control systems regulators manufacturers |
| convalescent homes | converted paper products | cookies manufacturers |
| copier repair | copiers | corn chips |
| corn chips manufacturers | corn snacks | corn snacks manufacturers |
| correctional institution | corrugated boxes | cosmetic dentist |
| cosmetic dentistry | cosmetic manufacturer | county government-courts |
| county government finance | county government taxation | courier service |
| court | court reporting | cracker manufacturers |
| crating | credit union | crematory |
| criminal law attorney | croissant | crude petroleum |
| curtains | curtains retail stores | custom computer programming services |
| custom made curtains | custom made draperies |
