- HandyLab (ann-arbor)
- James A Martin & Bros - Wagon Manufacturing (powhatan)
- Manna Oriental Market (ann-arbor)
- Midwest ISO (ann-arbor)
- Powhatan Zinc and Lead Mining Company (powhatan)
- Publicly traded companies (ann-arbor)
- Retail (ann-arbor)
- Rock Ventures LLC (detroit)
- The Concannon Company (ann-arbor)
- University of Michigan spinoffs (ann-arbor)
- Zealcon (tulsa)