1979-82 Board of Directors, First City Bank of Dallas, Dallas, Texas
1981-13 Board of Directors, Molex Corporation, Lisle, Illinois
1983-88 Board of Directors, Xytronyx, Inc., San Diego, California
1987-90 Board of Directors, Datapoint, San Antonio, Texas
2001-07 Board of Directors, Cree, Inc., Durham, North Carolina
2003-15 Board of Directors, Zebra Technologies Corporation, Lincolnshire, Illinois
2007-08 Director Emeritus, Cree, Inc., Durham, North Carolina


1999-02 Vice Chairman, Board of Governors, IIT Research Institute, Chicago, Illinois
2000-13 Board of Directors, The Bradshaw Group, Richardson, Texas
2000-12 Board of Directors, SpeedFC, Dallas, Texas
2000-02 Chairman of the Firm, Tatum CIO Partners, LLP, Atlanta, Georgia
2002-05 Advisory Director, The American National Bank, Terrell, Texas
2006-10 Advisory Board, Micropac Industries, Inc., Garland, Texas
2006-10 Advisory Board, MicroSun Technologies, Lisle, Illinois
2009 — Advisory Board, Pearson Partners International, Dallas, Texas
2014 — Advisory Board, ilumi Solutions, Plano, Texas
2014 — Advisory Board, SHEEX, Inc., Marlton, New Jersey
2016 — Advisory Board, Imaging Physics, MD Anderson Cancer Center, Houston, TX


1969-75 Trustee Committee, Athletics and Student Affairs, Lafayette College
1970-75 Board of Directors, Xerox Center for Health Care, Baylor School of Medicine
1974-88 Board of Directors, SMU College for Science and Technology, Dallas, Texas
1978-79 Board of Directors, Edwin L. Cox School of Business, SMU, Dallas, Texas
1978 — Board of Trustees, Illinois Institute of Technology, Chicago, Illinois
1989-92 Engineering Advisory Committee, University of Texas at San Antonio
1998-03 Board of Trustees, Alliance for Higher Education, Dallas, Texas
2003-07 University of Texas-Dallas External Research Advisory Council
2010 — University of Texas-Dallas Development Board


1977-78 Board of Directors, United Way of Dallas, Dallas, Texas
1985-87 Dallas Citizens Council, Dallas, Texas
1988-89 Executive Committee, San Antonio Economic Development Foundation
1988-90 Board of Directors, United Way of San Antonio, San Antonio, Texas
1988-90 Advisory Board, Alamo Chapter of American Diabetes Association
1987-88 Board of Directors, Richardson Medical Center Foundation