- 3M Corporation
- ABB Semiconductors S.A.
- (N. America, Europe, Asia)
- Acadia Polymers, Inc.
- Acme Business Products
- ActMedia
- Aequitron
- AGT Business Communications
- American Business Resource
- American Cyanamid
- American Express
- American Management Association
- American Management Association
- International, (Asia)
- American Waterworks
- A.N. Deringer Air Express International
- Applied Power
- Armco Steel
- Ashford International
- AT&T, Inc.
- Austin-Nichols
- Aydin Controls, Inc.
- BASF
- Bausch & Lomb
- BC Systems Ltd. (Canada)
- BC Tree Fruit Ltd. (Canada)
- Becton Dickenson Biosciences S.A.
- (Europe)
- BellSouth
- Bergen Record
- BIC Corporation
- Biodex
- Blue Cross/Blue Schield
- Boehringer-Ingelheim
- Boehringer-Mannheim Diagnostics
- BOSE Corporation
- Bostitich/Textron
- Boston University Corporate Education Center
- BostonCoach, Inc.
- Brighton Corporation
- Brush-Wellman, Inc.
- Bull Computer
- Bureau of Mines
- Burns Philp Ltd. (Europe)
- Business Week
- Caltex Lubricants Ltd.
- (Asia, ME, Africa)
- Canadian Management Centre
- (Canada)
- Canon Corporation
- Carter-Wallace
- Caterpillar, Inc.
- Centronics
- CertainTeed Corporation
- Channing Bete
- Cheseborough-Ponds
- Chevron Texaco Lubricants
- Chupa Chups S.A. (Europe)
- Church & Dwight
- Ciba-Corning
- Ciba-Geigy
- Clean Harbor
- Clemson University
- Coastal Distributors
- Commonwealth Edison, Inc.
- Computerland
- ConServCo
- Contel Cellular, Inc.
- Continental Resources
- Contra Costa Times
- Corbin Ltd.
- Corning Glass
- C.P. Hall Company
- Crane & Company
- CSX Corporation
- Daly-Cardinal Health
- Danaher Tool Group, Inc.
- Daner-Hayes
- Danfoss, S.A. (N. America, Europe)
- Datex
- Delta Dental
- Digital Equipment Corp
- Direct Mail Home Advertising
- Dodge Trucks
- Dr. Ing h.e.f.Porche (Europe)
- Drexel Burnham
- Dyonics
- E.F. Hutton
- E.I. duPont de Nemours
- East Penn Manufacturing Company
- Eastman Kodak
- Ecce Panis, Inc.
- Electrolux
- Englehard
- ENSR
- Environmental Quality, Inc.
- ExxonMobil Chemical Films Europe
- S.A. (Europe)
- Fenwal
- First American Title Insurance Co.
- First Software Corporation
- Fisons Ltd. (UK & USA)
- Flexonics
- FMC Agricultural Chemical
- FMC Industrial Group
- Ford Motor Company
- Fosbel, Inc.
- Frost & Sullivan Ltd (Europe, Asia)
- Genrad
- Gerber Scientific
- Griffith Labs
- GTE Directories
- GTE, Inc. (USA)
- GTE Mobilnet
- GTE Precision Materials
- GTE Telephone Operations
- Heller Seasonings
- Hewlett-Packard, Inc. (USA & Europe)
- Highland Industries
- Hoffman LaRoche Diagnostics
- Hoffman LaRoche Fine Chemicals
- Home Life Insurance Co.
- HomEquity
- Hoover Materials Handling, Inc.
- Huyack USA
- IBM
- INC. Magazine
- International Multifoods, Inc.
- IPC Information Systems, Inc.
- (USA & Europe)
- J.W. Allen
- James River Corp.
- John Deere – Deere Diesel S.A.
- (Europe)
- Johnson & Johnson Ltd. (Europe)
- JT-International, S.A.
- (Europe, Asia, ME, Africa)
- Keene Corporation
- Klochner-Moeller
- Kraft General Foods
- Kulicke & Soffa Industries
- Lesher Communications
- Liberty Mutual Insurance Co.
- Lighthouse Communication
- Litchfield Insurance Group
- LNP Corporation
- Lone Star Industries
- Lotus Development Corporation
- Management Centre Europe (Europe)
- Marcam Corporation
- Mathematica
- McCormick & Dodge
- Medi + Physics
- Memorex
- Metropolitan Life Insurance Co.
- Miles Laboratories
- Monroe Auto Equipment
- Murata Electronics USA, Inc.
- Mutual Benefit Corporation
- National Financial
- National Tour Association
- Nestle Foods Corporation
- New Balance Athletic Shoe Co.
- New York Transit Authority
- Niagra Plastics Company
- Noise Cancellation Technologies
- Northeast Ohio College of Medicine
- Nynex
- OCE Graphics
- Olympus Corporation
- Organon Pharmaceuticals
- Pennwell Publishing
- Pentaxx Corporation
- Pepperidge Farms
- Pepsico
- Perstorp Analytical
- Pfizer
- Phillips Automotive Lighting
- Phillips Communication Systems
- Phillips Consumer Electronics
- Pinkerton Security, Inc.
- Plexus Software
- Polaroid Corporation
- Potash Company of America
- R.J. Reynolds International B.V.
- (Europe, Asia, ME, Africa)
- Roche labs
- Rockwell – Collins Commercial
- Aviation
- Rockport Shoe
- Roller Bearing Company
- Rolm Telephone
- Safeguard Systems
- Sauders Manufacturing
- Schenley
- SCITA S.A. (Europe)
- Scitor
- Scott Paper Company
- SDA
- Seaboard Surety Company
- Securitas
- Smith Kline
- Southern Methodist University (SMU),
- Edwin L. Cox School of Business,
- Executive Education
- SoftView, Inc.
- Spider Systems
- Square D Company
- Stauffer Chemical Co
- StorageTek, Ltd.
- Stroeman Brothers Company
- Taylor Rental Corporation
- Taylor Wine
- Telecom Canada
- Telia AB (Sweden)
- Tenneco Automotive
- Texaco
- Thomson Information/Publishing
- Timex Company
- Trotter Fitness Equipment, Inc.
- Ultra Electronics, Ltd.
- Unicer S.A. (Portugal)
- Union Carbide Biocides
- Union Carbide Corporation
- Union Carbide OSi
- Union Carbide Specialty Chemicals
- Union-Tribune Publishing Co.
- Urban Decisions Systems
- USAir
- U.S. Surgical Corporation
- Vanguard
- Varsela, S.A.
- Velsicol Chemical Corporation
- Walker Manufacturing Corporation
- Waupaca Foundry, Inc.
- West Point Pepperell
- Western Atlas International
- Westinghouse
- Weyerhauser
- Wisconsin Electric Power Company
- Xerox, Inc. (USA & Canada)
- XL/Datacomp