CAPTAIN JOSE DA SILVA MYSTERIES
Always Kill A Stranger .................................. 1967
The Bridge That Went Nowhere ............................ 1968
The Xavier Affair ....................................... 1969
The Green Hell Treasure ................................. 1971
Trouble in Paradise ..................................... 1975
KEK HUUYGENS MYSTERIES
The Tricks of the Trade ................................. 1972
The Wager ............................................... 1974
Kek Huuygens, the Smuggler .............................. 1976
Written As Robert L. Pike
LIEUTENANT REARDON MYSTERIES
Reardon ................................................. 1970
The Gremlin's Grampa .................................... 1972
Bank Job ................................................ 1974
Deadline ................................................ 1976
Tall Trees, Tough Men ................................... 1984