| Business | Phone |
| Illinois Association-Bldg Mtnc 1153 Lee St Pmb 110, Des Plaines 60016 | (847) 824-1985 |
| Maryville Academy 1150 N River Rd, Des Plaines 60016 | (847) 294-1999 |
| Central States Se & Sw Areas 9377 W Higgins Rd, Des Plaines 60018 | (847) 518-9800 |
| Mid America Reg Bargaining 2720 S River Rd 222, Des Plaines 60018 | (847) 699-1283 |
| Orthopaedic Trauma Assn 6300 N River Rd, Des Plaines 60018 | (847) 698-1631 |
| Wpo Chicago Chapter 719 Arlington Ave, Des Plaines 60016 | (847) 827-9830 |
| Pediatric Orthopaedic Society 6300 N River Rd 727, Des Plaines 60018 | (847) 698-1692 |