- Caesar Kleberg Foundation for Wildlife Conservation
- Neva and Wesley West Foundation
- T. Dan Friedkin
- Elliott B. and Adelle Bottom
- The Fondren Foundation
- In Memory of Alice Gertrudis King Kleberg Reynolds
- The Walton Family Foundation
- HP Pinnell and Emilysue Pinnell
- L & H Packing Company and Kenneth E. Leonard
- Karen and George C. Hixon
- David Winfield Killam
- The Meadows Foundation, Inc.
- T. L. L. Temple Foundation
- Walter Umphrey
- Ben F. Vaughan, III
- South Texas Celebrity Weekends, 2000, 2001 and 2002
- American Electric Power
- Albert and Margaret Alkek Foundation
- Nancy Lee and Perry R. Bass
- Brittingham Conservation Foundation
- Loring Cook Foundation
- Charles A. DeYoung
- Houston Endowment Inc.
- Mestena Operating, Ltd.
- Ray A. Murski
- Richard J. Williams
- Daphne DuPont Vaughan
- Hoblitzelle Foundation
- Ellen and Buddy Temple
- Stuart W. Stedman
- James and Frances McAllen
- Karen and Dr. Phil Hunke
- A.C. Jones IV
- David Garza Laguera
- Jack L. Martin
- John R. Richardson and the Fluor Foundation
- Carolyn M. Appleton in honor of J. B. Sands
- Sarah Campbell Blaffer Foundation
- Janis and Fred C. Bryant
- Edinburg Improvement Association
- The Scott Petty Foundation
- Stag Sales Company
- Myra F. and Randolph L. Pullin Charitable Trust
- Dr. Charles A. Clements, DDS
- Alice G.K.K. East
- The Guerra Brothers
- Dr. Ronald R. Rosati
- Diane Scovell
- William D. Welder, Jr.
