Johnny Fedora Espionage Assignment

Secret Ministry (1951)
This Traitor, Death (1952)
Dead Man Falling (1953)
     aka The Hitler Diamonds
Intrigue (1954)
High Requiem (1956)
Johnny Goes North (1956)
     aka The Swastika Hunt
Johnny Goes East (1958)
     aka Mountainhead
Johnny Goes South (1959)
     aka Overload
Johnny Goes West (1959)
The Head (1960)
Undertow (1962)
Shockwave (1963)
     aka Hammerhead
Feramontov (1966)
Timelock (1967)
Sunburst (1971)