| Business | Phone |
| Horizon Press 5455 Corporate Dr, Troy 48098 | (248) 952-5944 |
| Excel Publishing 3031 Kingsley Dr, Troy 48084 | (248) 593-9070 |
| Motor Publications 5600 Crooks Rd, Troy 48098 | (248) 828-7000 |
| Performance Resource Press Inc 1270 Rankin Dr F, Troy 48083 | (248) 588-7733 |