| Alliant Food Service |
| American Bar Association |
| Ameritech |
| Amoco |
| Ariel Capital Management |
| AT&T |
| Baxter Healthcare |
| Blau/Direct Edge |
| Bloomberg Publishing |
| BMG Direct |
| Boller Coates |
| Bostrum/Cybul Design |
| Chicago Archdiocese |
| Chicago Board of Trade |
| Crosby Associates |
| Davis Harrison Dion |
| Eastman Kodak |
| Edward Don & Company |
| Fisher Scientific |
| Forecast Lighting |
| Frankel & Company |
| Good Year |
| Grant Jacoby |
| Hart Shaffner & Marx |
| Head Racquets |
 |
|
|
| Heinz |
| High Sierra Sport |
| Honeywell, Inc |
| IBM |
| Joss Design |
| Kirk-Steiff |
| Leo Burnett |
| Levis Belts |
| Levy Corporation |
| Lionel L.L.C. |
| Luster Products Inc |
| Maclean-Fogg Company |
| Magnani Continuum |
| Mama Tish's |
| Mary Kay Cosmetics |
| McDonalds Corporation |
| Midas International |
| Mitsubishi Inc |
| Miyano Machinery Inc |
| Mobium Corporation |
| Motorola |
| NEC |
| Nortel Limited |
| Northwestern University |
Porcher
Publications International |
| Puskar Gibbon Chapin, Inc |
|
|
|
| R.R.Donnelley & Sons
|
| Rand McNally |
| Roosevelt University |
| Sarah Lee |
| Sears |
| Shell Oil Company |
| Sierra Sport |
Sodexho Management
Source Inc |
| State of Pennsylvania |
| Stein and Company |
| Swift-Eckrich |
| Toyoda, Inc |
| U of Illinois at Chicago |
| US Postal Service |
| Vienna Sausage |
VWR Scientific
Wechler Ross and Partners |
| Wilson Sporting Goods |
| Wilton Enterprises |
| World Book International |
|
|
