written by (76 episodes, 1970-1975)
(95 episodes, 1969-1986)
writer (2 episodes, 1979)
(93 episodes, 1969-1986)
written by (75 episodes, 1970-1975)
supervising writer (73 episodes, 1971-1975)
writing supervisor (15 episodes, 1971-1980)
creator (3 episodes, 1969-1992)
writing supervisor (13 episodes, 1971-1980)
writer (3 episodes, 1974-1979)
co-creator (1 episode, 1969)
written by (61 episodes, 1970-1975)
(75 episodes, 1970-1980)
written by (51 episodes, 1972-1975)
(66 episodes, 1970-1980)
written by (24 episodes, 1970-1972)
(26 episodes, 1969-1972)
(7 episodes, 1978-1980)
writing supervisor (2 episodes, 1970)
(4 episodes, 1969-1970)
writer (1 episode, 1969)
additional material (2 episodes, 1979-1980)
(3 episodes, 1979-1986)
written by (1 episode, 1970)
(1 episode, 1986)
(unknown episodes)