- Novel: "Rampage". NOTE: Filmed as Rampage (1963).
- (1960) Novel (as Alan Lyle-Smythe): "The Plotter".
- (1959) Novel (as Alan Lyle-Smythe): "The Mindinao Pearl".
- (1957) Novel (as Alan Lyle-Smythe): "Alien Virus".
- Novel: "Assault on Agathon". NOTE: Filmed as Assault on Agathon (1977).
- (1955) Novel (as Alan Lyle-Smythe): "Rogues Gamble".
- (1966) Novel (as Alan Lyle-Smythe): "Journey to Orassia".
- (1964) Novel (as Alan Lyle-Smythe): "Marseilles".
- (1966) Novel (as Alan Lyle-Smythe): "Who'll Buy My Evil?".
- Novel: "The Cheetahs". NOTE: Filmed as Cheetah (1980).
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