even as x-libris

Always keep a look out for any in the Lucky Star science fiction series, (Lucky Star and the Pirates of the Asteroids, Lucky Star and the Oceans of Venus etc). The books, published by Doubleday, were written under the pseudonym of Paul French, in actuality were penned by Isaac Asimov. The whole series is collectible even when they are hard cover library discard copies. (Best if they still have the dustjackets though.)