References:
Commercial & Industrial
- 3M Company
- Allstate Insurance
- American Bar Association
- American Airlines
- Ameritech
- Argonne National Lab
- BASF Corporation
- Bank One
- Bankers Life
- Best Western Motels
- CB Richard Ellis
- Chemical Waste Management
- Chicago Bears-Lake Forest
- Chicago Health Club
- Chicago Merchandise Mart
- Chicago Title Company
- Citizens Utilities Company
- Commonwealth Edison
- Dominick's Finer Foods
- Eastman Kodak
- Golfmill Shopping Plaza
- Harris Banks
- Holiday Inns, Inc.
- Household International
- Hyatt Hotels
- Illinois Tool Works
- International Harvester
- J.C. Penney
- Johnson & Johnson Products
- Kraft General Foods
- LaSalle Banks
- Marriott Residence Inn
- Marshall Fields & Co.
- McDonald's Corporation
- Medinah Country Club
- Mid-America Title Co.
- Moore Business Forms
- Motorola, Inc.
- Neiman Marcus
- Northrop Grumman Corporation
- O'Hare Hilton Hotel
- Oscar Meyer & Company
- Pepsi Cola General Bottlers
- Pharmacia
- Salvation Army
- Sanfilippo, John B. & Son Inc.
- Scott, Foresman & Co.
- Sears & Roebuck, Inc.
- Shell Oil Company
- Sheraton O'Hare Hotel
- State Farm Insurance
- Texaco Refining & Marketing Inc
- United Air Lines
- United Steel Workers of America Local 1053
- Walgreens
- Woodstock Square Mall
- YMCA of Metropolitan Chicago
