1. Northern Exposure Investigations
PO Box 182, Marquette, MI 49855
Coordinate: 46.53124,-87.38944
Phone: (906) 458-6687
2. Superior Research Services
417 Stone Quarry Dr, Marquette, MI 49855
Coordinate: 46.52928,-87.40145
Phone: (906) 225-4070
3. Bulldog Investigations
217 W Washington St, Marquette, MI 49855
Coordinate: 46.54363,-87.39618
Phone: (906) 273-2323
4. Research North Inc
207 E Michigan St, Marquette, MI 49855
Coordinate: 46.5475,-87.38998
Phone: (906) 225-1200