Found these in an old used bookshop yesterday. All Frazetta covers too. Sad that someone added shorts to the woman on the Escape to Venus cover tho. Given how long ago these were written, I guess the censorship shouldn't surprise me. I enjoyed the John Carter of Mars books I read by him. (Known as the Barsoom series.) Since these were written after those, they might be even better. #scifibooks #oldscifi #tbrpile