The Case of the Curious Heel (1944)
The Laughing Buddha Murders (1944) (writing as Richard Foster)
The Case of the Phantom Fingerprints (1945)
Murder Out of Mind (1945)
The Invisible Man Murders (1945) (writing as Richard Foster)
Satan Comes Across (1945) (writing as Bennett Barlay)
The Girl from Easy Street (1952) (writing as Richard Foster)
Once Upon a Star (1953)
Year of Consent (1954)
Blonde and Beautiful (1955) (writing as Richard Foster)
The Burned Man (1956) (writing as Christopher Monig)
     aka Don't Count the Corpses
The Tortured Path (1957)
Abra-Cadaver (1958) (writing as Christopher Monig)
Bier for a Chaser (1959) (writing as Richard Foster)
The Big Dive (1959)
Once Upon a Crime (1959) (writing as Christopher Monig)
The Rest Must Die (1959) (writing as Richard Foster)
The Lonely Graves (1960) (writing as Christopher Monig)
Too Late for Mourning (1960) (writing as Richard Foster)
The Marble Jungle (1961) (writing as Clay Richards)
Death of an Angel (1963) (writing as Clay Richards)
The Gentle Assassin (1964) (writing as Clay Richards)
Who Steals My Name (1964) (writing as Clay Richards)