- Series: Richard Verner, heuristician Series Record # 71928
- Richard Verner, heuristician
- The Problem Solver and the Hostage (1966) [SF] by Christopher Anvil
- The Problem Solver and the Killer (1966) [SF] by Christopher Anvil
- The Problem Solver and the Defector (1966) [SF] by Christopher Anvil
- The Problem Solver and the Burned Letter (1967) [SF] by Christopher Anvil