1. Omjc Signal Inc 403 Chestnut St, Waterloo, IA 50703 Coordinate: 42.509,-92.33614 Phone: (319) 236-0200
2. Service Signing 3533 W Airline Hwy, Waterloo, IA 50703 Coordinate: 42.53996,-92.4067 Phone: (319) 235-9356