Aetna, Inc.
AIG
AIM Investments
Akzo Nobel
Alliant Energy
Amerada Hess Corp.
American Express
Ameritech
Anadarko Petroleum Corporation
Anheuser-Busch
Aon Risk Services
Apache Corporation
Arco Oil
Argonaut Insurance Company
Avaya Communication
AXA
Baker Hughes
Bank of America
Bank United
Baxter Allegiance
Bhpbilliton
The Boeing Company
BP Amoco
Bridgeway Funds
Bunge Corporation
Cabot Oil & Gas
Cardinal Health
JP Morgan Chase
ChevronTexaco
Chubb Insurance
Cisco Systems, Inc.
CITGO Petroleum Corporation
Citigroup
The Coca-Cola Company
Coldwell Banker United, Realtors
Comerica Bank
Conoco Phillips, Inc.
Darden Restaurants
Dell Computers
Disney/ESPN
Dow Chemical
Duke Energy
DuPont
Dynegy, Inc.
El Paso Energy
Entergy Services, Inc.
EOG Resources, Inc.
Equistar Chemicals, L.P.
Equiva Services
ExxonMobil
Fayez Sarofim & Co.
Fidelity Investments
First Union Corp.
FMC Foundation
Arthur J. Gallagher Foundation
Gannett Foundation
General Mills
Global Santa Fe
Goldman, Sachs & Co.
Google, Inc.
Halliburton Political Action Committee
Halliburton, Inc.
Hewlitt Packard
Home Depot
Illinois Tool Works
Intel
International Paint, Inc.
John Hancock Mutual
Kinder Morgan, Inc.

KPRC TV
Landmark Graphics
Laturneau
Lehman Brothers
Lockheed Martin Corporation
M. W. Kellogg
Marsh, Inc.
Mass Mutual
MasterCard International
May Department Stores Company
Merrill Lynch & Co.
Microsoft
Minute Maid
Mobil
Morgan Stanley Dean Witter
Motiva Enterprises LLC
Motorola
National Manufacturing Co.
New York Life Insurance Company
Noble Corp.
Northwestern Mutual Life
Nuevo Energy Company
Occidental Petroleum Corp.
Ocean Energy
ONEOK Foundation, Inc.
People's Energy
Pepsico
Pharmacia
Phillips 66
Phoenix Home Life Mutual Insurance Company
The Procurement Center
Prudential
Puffer-Sweiven
Raytheon
RBC Dain-Rauscher
Riviana Foods
Rockwell
Ryan Energy Technologies
Seitel, Inc.
Shell Oil Company
Silicon Graphics
SKF USA, Inc.
Smith International Industries
Soloman Smith Barney
Southwestern Bell Communications
Sprint
Stephens Inc.
Stone & Webster
Sun Microsystems
SunTrust Bank
Temple-Inland
Texas Industries
Texas Instruments
The Robert & Jane Cizik Foundation
Tidewater Marine
TotalFinaElf E&P USA, Inc.
Transco
Tyco
United Space Alliance Trust
Unocal
USAA Community Affairs
Vastar Resources Inc.
W. W. Grainger, Inc.
Wachovia Corporation
Washington Mutual
The Watson Foundation
Wells Fargo
Williams Community Relations
Zurich N.A.