| Business | Phone |
| Illinois Heritage Assn 602 Green St, Champaign 61820 | (217) 359-5600 |
| Illinois State Music Tchrs Asn 113 S Walnut St, Champaign 61820 | (217) 398-4199 |
| National Assn Advsrs Hlth Pro 205 W Green St, Champaign 61820 | (217) 355-0063 |
| North Central Assn 616 E Green St 201, Champaign 61820 | (217) 333-1120 |
| Preservation & Conservation 44 E Washington St, Champaign 61820 | (217) 359-7222 |
| Washington & Colt Assn 801 W Bradley Ave, Champaign 61820 | (217) 352-2015 |
| Il Crop Improvement Assn Inc 3105 Research Rd, Champaign 61822 | (217) 359-4053 |