District of Columbia Bar New York State and Maryland State Bar Associations.

The District of Columbia Bar Maryland State and American Bar Associations Virginia State Bar.

District of Columbia Bar Maryland State and American Bar Associations.

The District of Columbia Bar Co-Chairman, Injuries to Persons and Property Section, 1994-1996 Member, Steering Committee, 1994— Faculty, 1995— Editor, Standardized Civil Jury Instructions for the District of Columbia, 1998—, revised edition Bar Asso

The District of Columbia Bar American Bar Association Defense Research Institute District of Columbia Defense Lawyers Association.

American Bar Association Member, Section on Tort and Insurance Practice.