Hamilton Stewart / ... (2 episodes, 1991-1999)
Barnett M. 'Big Bud' Lutz (13 episodes, 1988)
Thomas Clinton, Southland Chairman of the Board
Sam Ervin / Lyndon B. Johnson / John Marshall
Dr. Morton / ... (2 episodes, 1961-1963)
Martin Sprode (unknown episodes, 1958)
Dr. David Stewart / ... (3 episodes, 1963-1984)
Calvin Broderick / ... (4 episodes, 1954-1963)