The Face on Mars
A little back-and-forth with Nick Redfern about comic book artist Jack Kirby (The Fanatstic Four et cetera) and his 1958 "prescient" comic book entry The Face of Mars, which the Above Top Secret site also took a look at, forced me to remind Nick that the movie Rocketship XM (1950) was the intigator of the Face on Mars and the idea that a once-advanced civilization existed there.
Nick brought up the Viewmaster series and Tom Corbett, Space Ranger TV show as sources for The Face....
But it was the 1950 film from which The Face on Mars derives, even for Richard Hoagland's (1996) The Monuments of Mars — A City on the Edge of Forever.
Try to find the film, and get a whiff of where the idea for life on Mars originated.