Detektivlitteratur:
- "The Cross Roads Murder" (1921)
- "Mordet på djurparken" (1923)
- "The Ghost of Ward's Mill" (1925)
- "The Blue Cross" (1926)
- "The Crimson Claw" (1927)
- "Den kinesiska papegojan" (1930)
- "The Clue of the Red Peruk" (1932)
- "The Riddle of the Travelling Show" (1934)
- "The Case of the Dead Millionaire" (1936)
- "Mysteriet med det låsta rummet" (1938)
Westerns:
- "The Sagebrush Law" (1920)
- "Ökenfejden" (1922)
- "The Range Boss" (1924)
- "The Outlaw Trail" (1926)
- "The Lone Star Ranger" (1928)
- "The Branded Man" (1930)
- "The Fighting Sheriff" (1932)
- "The Gun-Runner" (1934)
- "The Last Roundup" (1936)
- "Mannen från Texas" (1938)
Historiska romaner:
- "The Scarlet Dawn" (1919)
- "The Maid of Orleans" (1921)
- "Knight of the Cross" (1923)
- "Den svarte prinsen" (1925)
- "The Kingmaker" (1927)
- "Nordens stjärna" (1929)
- "Svärdet och korset" (1931)
- "The Last of the Mohicans" (1933)
- "The Oregon Trail" (1935)
- "The Forty-Niner" (1937)
True-Crime Stories:
- "Mord på vattnet" (1940)
- "The Case of the Missing Heiress" (1942)
- "Mysteriet med den förgiftade pennan" (1944)
- "The Lady in the Lake" (1946)
- "Mannen med ärret" (1948)
- "Kroppen i garderoben" (1950)
- "The Case of the Vanishing Corpse" (1952)
- "Mordet i rum 13" (1954)
- "The Poisoned Pen" (1956)
- "The Strange Case of Dr. Jekyll and Mr. Hyde" (1958)
Övriga verk:
- "En riktig pojkes äventyr" (1917)
- "The Jungle Fighters" (1918)
- "The Lost Patrols flygare" (1945)
- "Dinosauriernas förlorade värld" (1947)
- "Grottornas hemlighet" (1949)
- "Mysteriet med den gömda skatten" (1951)
- "The Phantom of the Opera" (1953)
- "The Case of the Haunted House" (1955)
- "The Secret of Skull Mountain" (1957)
- "Mumiens förbannelse" (1959)