- A.C. Nielsen
- Allstate
- American Express
- AT&T
- BancOne
- Blue Cross Blue Shield
- Capital One
- CBS
- Chase Manhattan Bank
- Citibank
- Dean Witter
- Dow Jones & Co.
- Dun & Bradstreet
- Eastman Kodak
- Gartner Custom Research
- General Electric
- General Motors Corp.
- Hallmark Cards
- Harvard University
- HBO
- IBM
- Kellogg Co.
- Liz Claibourne
- Marriott Corp.
- MCI
- Mercedes Benz
- MOBIL Oil Corp.
- National Institutes of Health
- Novartis
- Pharmacia
- Pfizer Pharmaceuticals
- Raytheon Company
- RJR Nabisco
- Scotia Bank
- Siemens Medical Research
- University of Michigan
- U.S. Dept. of Agriculture
- World Bank
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