| Business | Phone |
| Jefferson Davis Assoc 425 2nd St Se 340, Cedar Rapids 52401 | (319) 364-4460 |
| Shopper's Hotline Inc 5005 Blairs Forest Ln Ne A, Cedar Rapids 52402 | (319) 363-6070 |
| Vernon Research Group 1962 1st Ave Ne, Cedar Rapids 52402 | (319) 364-7278 |
| Dan Wiese Marketing Research 2108 Greenwood Dr Se, Cedar Rapids 52403 | (319) 364-2866 |