| Business | Phone |
| American Wordsmith San Diego 92120 | (619) 282-9673 |
| Advo Inc 8755 Aero Dr, San Diego 92123 | (858) 565-2386 |
| American List Compilers Po Box 22966, San Diego 92192 | (619) 491-7412 |
| Peter Li Education Group San Diego 92103 | (619) 298-7118 |
| National Direct Mailing Svc 9586 Distribution Ave # F, San Diego 92121 | (858) 271-1781 |
| List Werks San Diego 92122 | (858) 458-0661 |
| Infomart 10601 Tierrasanta Blvd # 130, San Diego 92124 | (858) 560-6278 |