EG062 KLINE, Otis Adelbert The Swordsman of Mars Ace D-516 1960 G+ swordfight-c € 8
EG289 KLINE, Otis Adelbert The Outlaws of Mars Ace D-531 1961 VG- € 7
EG336 KLINE, Otis Adelbert Prince of Peril Ace F-259 1962 VG+ Roy Krenkel-c & illos. € 8