| Business | Phone |
| Vistula Management Co 824 N Ontario St, Toledo 43604 | (419) 246-4748 |
| Gilchrist Alumni Management Po Box 350942, Toledo 43635 | (419) 843-4341 |
| Laker Project Management Ltd 29 Meadow Ln, Toledo 43623 | (419) 475-1541 |
| Mc Carthy Management 4444 N Holland Sylvania Rd, Toledo 43623 | (419) 885-1200 |
| Mockensturm Management Ltd 6204 N Summit St # 1, Toledo 43611 | (419) 865-0515 |