- 3M
- Abbott Laboratories
- Advanced Micro Devices (AMD)
- Allianz
- Allied Waste Industries
- Allstate Insurance
- The American Red Cross
- American Century Investments
- Ameritech
- Amoco
- Anheuser-Busch
- ARAMARK
- Armstrong World Industries
- AT&T
- Auntie Anne's
- BASF SE
- BASF Corporation (USA)
- Bayer USA
- The Boeing Company
- Bombardier Aerospace
- British Petroleum
- Bristol-Myers Squibb
- British Airways
- Carpenter Technology
- CIGNA Group Insurance
- Cisco Systems, Inc.
- Computer Sciences Corporation
- Conrail
- Continental AG
- Daimler-Benz
- Devon Energy
- Digital Equipment Corporation
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- Dover Corporation
- Eastman Kodak
- Ecolab
- LM Ericsson
- Excelon
- The Federal Reserve
- First Data Corporation
- Freightliner Corporation
- Fujitsu
- GPU
- Groupe Schneider NA
- Hallmark Inc.
- The Hartford
- Henkel KgaA
- Hewlett Packard
- Horace Mann Companies
- IBM
- Junior Achievement
- The Limited
- Lockheed Space Operations Co.
- McDonald's
- McGraw-Hill Companies
- Mercedes Benz North America
- Mercedes Benz Credit Corp.
- Metromedia Restaurant Group
- Merck & Co., Inc.
- Motorola
- National Australia Group
- National Health Service (UK)
- National Science Foundation
- PECO Energy
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- Commonwealth of Pennsylvania
- Payless ShoeSource
- Petron (Philippines)
- Philips Electronics NA
- PJM Interconnection
- PricewaterhouseCoopers
- Principal Financial Group
- Prudential
- Research In Motion (Blackberry)
- Rockwell
- Rockwell Automation
- Rohm and Haas
- The St. Paul Companies
- Samsung
- Saudi Aramco
- Schering-Plough
- Scudder Kemper Investments
- Solvay Pharmaceuticals
- Sun Life of Canada
- J.R. Simplot
- TRW
- UBS
- Unilever
- UNISYS
- United States Steel Corporation
- US West
- Utilicorp United
- Warner-Lambert
- The Weitz Company
- Western Union
- Westfield Group
- Westinghouse
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