SUPERMAN AND THE SECRET PLANET was a 1950's Superman movie project which would have had the same cast as the television version. A script was written, but the movie was never made.
A comic book version was later drawn by Randy Garrett with all the characters drawn to look like the people who played them on the television version.
There is a poster for PANTHER GIRL OF THE CONGO visible in the background of the last panel, that was a serial starring Phyllis Coates, who had been Lois Lane in the first season of the television program.
http://www.jimnolt.com/sp-intro.htm
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