| Business | Phone |
| Covance Research Products Inc 6321 S 6th St, Kalamazoo 49009 | (269) 375-0482 |
| Fund-Public Interest Research 326 W Kalamazoo Ave # 209b, Kalamazoo 49007 | (269) 342-0793 |
| Industrial Relations Research 5945 W Main St, Kalamazoo 49009 | (269) 372-6480 |