Tulsa County Member, Mineral Law Section, President, 1990, Oklahoma Member, Sections on Real Property and Mineral Law and American Member, Sections on Real Property, Probate, Trust and National Resources Law Bar Associations.

Tulsa County, Oklahoma Chairman, Mineral Law Section, Illinois, Missouri and American Bar Associations Texas State Bar Tulsa Association of Petroleum Landmen Oklahoma Independent Petroleum Association Chair, Legal Committee, 2003—.

Tulsa County and Oklahoma Member, Mineral Law Section Bar Associations Tulsa Association of Petroleum Land Men.

Tulsa County, Oklahoma Charter member, Litigation Section and American Bar Associations Oklahoma Association of Defense Counsel.

Tulsa County President, 1999-2000 Member, Board of Directors, 1992-2003, Oklahoma Member, Board of Governors, 2003-2005 and American Bar Associations State Bar of Texas.

Tulsa County, Oklahoma and American Bar Associations.

Tulsa County Chairman, Mineral Law Section, 1987-1988 and International Bar Associations Member, Section on Energy and Natural Resources Law.

Oklahoma Bar Association Member, Client Security Fund Committee, 1996— National Academy of Elder Law Attorneys.