| Business | Phone |
| Smurfit-Stone Container Ent 150 N Michigan Ave, Chicago 60601 | (312) 346-6600 |
| Unique Box Co 6548 N Glenwood Ave, Chicago 60626 | (773) 758-6655 |
| Mead Corp 1400 E 98th St, Chicago 60628 | (773) 731-5616 |
| Mead Westvaco Packaging Syst 9540 S Dorchester Ave, Chicago 60628 | (773) 731-9500 |
| Knight Paper Box Co 4651 W 72nd St, Chicago 60629 | (773) 585-2035 |
| Harlen Corp 3355 W 48th Pl, Chicago 60632 | (773) 254-9300 |
| Smurfit-Stone Container Corp 6131 W 74th St, Chicago 60638 | (708) 458-5288 |