3COM Corporation
3M
A-D Electronics, Inc.
Abbott Laboratories
Adobe Systems, Inc.
AETNA
AG Communication Systems
Air Product & Chemicals
Akzo Nobel
Allendale Mutual Insurance Co.
Alliant Techsystems
Allied Signal, Inc.
American Express Co.
American Honda Motor Co., Inc.
American International Group
American Stock Exchange
Ameritech Corporation
Amgen, Inc.
Amsted Industries
Analog Devices, Inc.
Andersons, Inc.
AOL Time Warner
AON
Apple Computers, Inc.
Applied Energy Services
Archer Daniels Midland Foundation
Ares Advanced Technology
Argonaut Group, Inc.
Aristokraft, Inc.
Arkwright Mutual Insurance Co.
Armco, Inc.
Aspect Telecommunications
AT&T
Atlantic Data Services, Inc.
AutoAlliance International, Inc.
Autodesk, Inc.
Automatic Data Processing
Avon Products, Inc.
BankAmerica Corp
Bankers Trust Company
Becton Dickinson & Co.
BellSouth Corp.
Beneficial Corporation
BF Goodrich Company
Bituminous Casualty Corp.
Black & Decker Corp.
BMC Industries, Inc.
Boeing Company
Borden, Inc
BP America, Inc.
unswick Corporation
Burlington Northen Santa Fe Corporation
Burroughs Wellcome Co.
Butler Manufacturing Company
C.R. Bard, Inc.
Cadence Design Systems, Inc.
Cam idgeSoft
Carolina Power & Light Co.
Caterpillar, Inc.
CBS, Inc.
Centel Corporation
Charles Schwab
Chase Manhattan Bank
Chese ough-Pond's USA
Chevron Corporation
Chicago Title & Trust Company
Chubb & Son, Inc.
Chubb Life Insurance Company of America
Cigna Corp.
Circuit City Stores, Inc.
Cisco Systems, Inc.
CITGO Petroleum Corporation
Citicorp/Citibank, N.A.
Clariant Corporation
CNA
Coca Cola Company
Colgate-Palmolive Company
Columbus Life Insurance Co.
Compaq Computer
Computer Associates
Computer Consoles, Inc.
Computer Network Technology Corp.
COMSAT
ConAgra Foods, Inc.
Conoco, Inc.
Consolidate Papers, Inc.
Consolidated Natural Gas Company
Cooper Industries
Cooper Tire & Rubber Company
Corning, Inc.
Corporate Software, Inc.
CPC International, Inc.
Cray Research, Inc.
Crestar Bank, N.A.
Dean Witter Discover
DEKALB Genetics Corporation
Deknatel, Inc.
Dictaphone Corporation
Duke Power Company

Duracell International, Inc.
Eastern Mountain Sports
Eaton Corporation
Eaton Vance Management
Ecolab, Inc.
ELF Atochem North America, Inc.
Eli Lilly & Company
Enron Corporation
Equifax, Inc.
Equistar Chemicals, LP
Federated Department Stores
FINA, Inc.
First Bank System, Inc.
First Data Corporation
FMC Corporation
Freeport-McMoRan, Inc.
Fuji Bank, Ltd.
Gannett
Gap, Inc.
GATX Corporation
GEICO
General Mills, Inc.
General Re Corp.
Georgia-Pacific Corp.
Gillette Company
Gilman Paper Company
Glaxo Wellcome, Inc.
Glenmede Corporation
GreenPoint Bank
H & R Block, Inc.
H.J. Heinz Company
Harcourt General
Harrah's Entertainment, Inc.
Hillman Company
Hoechst Celanese Corp.
Home Depot
Honeywell, Inc.
Houghton Chemical Corporation
Houghton Mifflin Company
Household International
Hoyoke Mutual Insurance Company
IBM Corporation
IDS Financial Services
IKON Office Solutions Foundation
Illinois Tool Works, Inc.
IU International
Jefferson Pilot Financial
John Hancock Advisors, Inc.
John Hancock Mutual Life Insurance
John Wiley & Sons, Inc.
Johnson & Higgins
Johnson & Johnson
Joseph E. Seagram & Sons, Inc.
Kemper National Insurance Co.
KeyCorp
Keystone Associates, Inc.
Kimberly Clark Corp.
Kirkland & Ellis
KMART Corp.
Leo Burnett Company, Inc.
Levi Strauss & Company
LEXIS-NEXIS
Liz Claiborne, Inc.
Loews Corporation
Lu izol Corporation
Lucent Technologies
Mallinckrodt Group, Inc.
Manufacturer's Hanover
Maritz, Inc.
Marriott International, Inc.
MassMutual
MasterCard International, Inc.
Mattel, Inc.
May Department Stores Co.
Maytag Corporation
Mazda (North America), Inc.
McDonald's Corporation
McGraw-Hill, Inc.
Mellon Bank
Merck & Co., Inc.
Merrill Lynch & Co. Inc.
Micron Technology, Inc.
Microsoft Corporation
Milliken & Company
Millipore Corporation
Mineral Technologies, Inc.
Mitsubishi International Corp
Monsanto Company
Morgan Guaranty Trust Co
Morton International, Inc.
Motorola Foundation
Murphy Oil Corporation
Mutual of America
NACCO Industries, Inc.
Nalco Chemical Co
National Starch & Chemical Co.
NCR Corporation
Neiman Marcus
New York Times Company

Newsweek
Nike, Inc.
Nissan North America, Inc.
Nordstrom Corporation
Norfolk & Dedham Group
Norfolk Southern Santa Fe Company
Norton Company
Olin Corporation
Oppenheimer Funds, Inc.
Pacific Enterprises
Pan Energy
Panhandle Eastern Corp.
Pella Corporation
Peoples Energy Corporation
Pepsico
Pfizer, Inc.
Pharmacia & Upjoin, Inc.
Phelps Dodge corporation
Philip Morris, Inc.
Pioneer Group, Inc.
Pitney Bowes, Inc.
Pittson Company
Pittway Corporation
Polaroid Corporation
PPG Industries
Premark International, Inc.
Procter & Gamble
Provident Companies, Inc.
Prudential Insurance Company
R.H. Macy & Co.
R.R. Donnelley & Sons Company
Ralston Purina
Reader's Digest Assoc.
Reebok
Reliable Life Insurance Co.
Reuters America, Inc.
RW Beck & Associates
Safeco Corporation
Sands Corporation
Sara Lee Foundation
SBC Communications, Inc.
Security Pacific Corp
Sedgwick, Inc.
Sentry Insurance Foundation
Shawmut National Corp.
Shearson Lehman others, Inc.
Shenandoah Life Insurance Co.
Sherwin-Williams Company
Silicon Graphics, Inc.
Smithklein Beecham Foundation
Sony Corporation of America
Spiegel, Inc.
Sprint
St. Paul Companies, Inc.
Stanley Works
Stride Rite Corporation
Subaru of America
Sun Microsystem, Inc
Susquehanna Investment Group
T. Rowe Price
Tandy Corporation
TCF Financial corporation
TEKTRONIX, Inc.
Tellabs, Inc.
Temple-Inland, Inc.
TENNANT Foundation
Tenneco, Inc.
Tetley, Inc.
Textron, Inc
Tomkins Industrial Foundation
Toro Company
TransAmerica Corporation
Travelers Express Company,Inc.
TRW, Inc.
Tyco International, Inc.
U.S. Bancorp
Unilever United States, Inc.
Union Pacific Corporation
Unisource Foundation
United Parcel Service
United Technologies Corp
USF&G
USG Corporation
Vanguard Group, Inc.
Vulcan Materials Company
W.W. Grainger, Inc.
Warner-Lambert Company
Washington Mutual
Washington Post Company
Waste Management, Inc.
Whirlpool Corporation
Winn-Dixie Stores, Inc.