- With Thomas Concrete Products Company, Oklahoma City, 1973—1977. President Michael C. Thomas Companies, Inc., since 1977.
Board directors Oklahoma Symphony Orchestra, 1978—1983, treasurer, 1981—1985, president elect, 1984—1985, president, 1985—1986, State Capital Area Association, 1984—1985. Board directors Oklahoma Heritage Association, since 1982, Oklahoma Museum Arts, since 1985. Member of Oklahoma County History Society, Building Owners and Managers Association, National Association Industrial and Office Parks, Oklahoma Chamber of Commerce, Oklahoma City Golf and Country, Confederate Air Force.
1973 - 1977