WThe Ancient EngineersWAncient Ruins and ArchaeologyWAntarctic ConquestWThe Ape-Man WithinWThe Blade of ConanWBlond Barbarians and Noble SavagesWThe Conan GrimoireWThe Conan ReaderWThe Conan SwordbookWDark Valley DestinyWDarwin and His Great DiscoveryWThe Day of the DinosaurWElephant (de Camp book)WEnergy and PowerWEngines (book)WThe Evolution of Naval WeaponsWThe Fringe of the UnknownWGreat Cities of the Ancient WorldWThe Great Monkey TrialWThe Heroic Age of American InventionWInventions and Their ManagementWLands BeyondWLiterary Swordsmen and SorcerersWLost ContinentsWLovecraft: A BiographyWMan and PowerWThe Miscast BarbarianWThe Ragged Edge of ScienceWRubber Dinosaurs and Wooden ElephantsWScience-Fiction HandbookWThe Spell of ConanWSpirits, Stars, and SpellsWThe Story of Science in AmericaWTime and Chance: An AutobiographyWTo Quebec and the Stars