| Business | Phone |
| Advantage Research-Northern 1910 Saint Joe Center Rd # 31, Fort Wayne 46825 | (260) 492-5541 |
| Custom Research & Tabulations 824 Mill Lake Rd, Fort Wayne 46845 | (260) 422-4444 |
| Lang Marketing Resources 10818 Coldwater Rd, Fort Wayne 46845 | (260) 637-5200 |