* _Shambleau_ (1933)
* _The Weird Worlds_ (1940)
* _Judgment Night_ (1952)
* _The Song of Minla_ (1953)
* _Northwest of Earth_ (1954)
* _Island in the Sky_ (1954)
* _Doomsday Morning_ (1957)
* _The Witch's Daughter_ (1957)
* _The Stars are Ours!_ (1958)
* Fantasy:
* _Black God's Shadow_ (1934)
* _Jirel of Joiry_ (1939)
* _The Song of the Sirens_ (1940)
* _Khokarsa the Wonder-Weaver_ (1942)
* _The Jirel of Joiry stories_ (1950)
* _The Darkest Dawn_ (1952)
* _All Cats Are Gray_ (1952)
* _The Lost Gate_ (1954)
* _The Tree of Life_ (1960)
* _Sword in the Star_ (1960)
* Westerns:
* _The Gun-Tamer_ (1931)
* _The Law of the Gun_ (1931)
* _The Sheriff's Son_ (1932)
* _The Fighting Fool_ (1932)
* _The Rustlers_ (1933)
* Mystery:
* _Who Is Mr. Valentine?_ (1933)
* _The Mystery of the Spanish Shawl_ (1934)
* _Shadow in the House_ (1934)
* _The Shadow Strikes_ (1934)
* _The Case of the Dead Man's Hand_ (1935)
* _The Case of the Hidden Witness_ (1935)
* _The Case of the Mysterious Lady_ (1936)
* _The Case of the Missing Bridegroom_ (1936)
* _The Case of the Murdered Golfer_ (1937)
* _The Case of the Vanishing Corpse_ (1937)
* Short stories:
* "The Witch's Daughter" (1935)
* "The Judgment of Eve" (1940)
* "Shambleau and Others" (1933)
* "The Doomsman" (1932)
* "The Return of Jirel of Joiry" (1939)
* "The Horror from the Abyss" (1934)
* "The Song of the Dead" (1941)
* "The Dark Land" (1936)
* "The Bright Face of Danger" (1942)
* "The Lady of the Lost Isle" (1937)