Otis Adelbert Kline cloned Edgar Rice Burroughs’ Mars novels and produced Swordsman of Mars and Outlaws of Mars. Two Earthmen are sent to Mars through a telepathic mind swap. In Swordsman of Mars our hero is Harry Thorne, a young man from a wealthy family who has been falsely compromised. Thorne agrees to the incredible experiment and finds himself thrust into a dangerous political battle with the second, evil, Earthman. In Outlaws of Mars an American soldier, Jerry Morgan, agrees to be transported to the Red Planet. Morgan arrives on Mars and is instantly embroiled in a civil war. Both books are based on Burroughs’ John Carter novels. Readers who love the action in Burroughs’ Mars novels will find plenty to like in these two imitations.