| Business | Phone |
| Phillip M Caserotti Consulting 16170 Hawthorne Dr, Mt. Vernon 62864 | (618) 242-2731 |
| Geo Trace Inc 17744 E Il Highway 15, Mt. Vernon 62864 | (618) 244-7900 |
| Dean Hollensbe 1300 Salem Rd, Mt. Vernon 62864 | (618) 242-9443 |
| Harris G Wilson Jr 125 N 11th St, Mt. Vernon 62864 | (618) 244-0021 |