TRAIL TO THE UNKNOWN
Original Airdate: 11/1/1975

screenshots / Return to the Planet of the Apes: Trail to the Unknown (S1.E9) / 1975 20th Century Fox Television

Animated series based on the popular Planet of the Apes film franchise ran on Saturday mornings (1975-76) for one season on the NBC television network and consisted of 13 episodes.

Providing the voice of astronaut Jeff Allen, actor Austin Stoker had previously appeared in 1973's Battle for the Planet of the Apes - which was the fifth and final entry of the original Planet of the Apes film series.