Buck Roger's Venus

The World of Spirits by Kirby and Simon

The Deadly Dingo! by Nick Cardy

From Batman #80, DC Comics, 1953

Mars

The Sea Beasts from One Billion, B.C.! (Aquaman, 1961)

Condensed down to just the good parts!

Those wacky mad scientists!
From Showcase #31, 1961, DC Comics by Jack Miller & Nick Cardy

Cover by Dick Dillin & Sheldon Moldoff

Robbie the Robot (1951) by Irwin Hasen

From Strange Adventures #11, DC Comics, 1951 by Irwin Hasen

Professor Eureka Meets a Martian! (1961)

Tales of The Unexpected #60, DC Comics, 1961, by Henry Boltinoff