The Time Tunnel on ABC

Season 1, Episode 30
The scientists of Project Tic Toc believe the control of time is potentially the most valuable treasure that man will ever find. Located beneath the Arizona desert, the ten-year project's focus is the feasibility of time travel.

Season 1, Episode 30
The time travelers materialize in 1978 in a small New England town taken over by aliens, who plan to drain all the oxygen out of Earth's atmosphere.

Season 1, Episode 29
Doug and Tony land in the desert during the historic 1883 battle of Khartoum just as a far greater battle against an alien race intent on destroying Earth begins.

Season 1, Episode 28
A metallic man of the future takes Ann to his planet for scientific study.