| Business | Phone |
| Rothkopf Covilli & Jaacks 610 Oakland Rd Ne, Cedar Rapids 52402 | (319) 364-1010 |
| Aem Inc 5250 N Park Pl Ne 106, Cedar Rapids 52402 | (319) 377-1129 |
| Control Sales Inc 6825 Kent Dr Ne, Cedar Rapids 52402 | (319) 365-5457 |
| Rathsburg Associates 1904 Greentree Ct Nw, Cedar Rapids 52405 | (319) 364-5582 |