creator (41 episodes, 1971-1973)
written by (35 episodes, 1971-1973)
written by (3 episodes, 1971-1972)
story (1 episode, 1972)
additional material (1 episode, 1972)
written by (1 episode, 1973)
written by (2 episodes, 1972)
written by (1 episode, 1971)