Kline, Otis Adelbert
Alphabetical Checklist
Series – Mars
- The Outlaws of Mars (New York: Avalon Books, 1960)
- The Outlaws of Mars (Bellevue, Washington: Paizo Planet Stories, 2009)
- The Swordsman of Mars (New York: Avalon Books, 1960)
- The Swordsman of Mars (Bellevue, Washington: Paizo Planet Stories, 2008)