- (1934,1954) Novel: "The Barbarians" (filmed as The Barbarians (1960)).
- (1935) Story: "The Enemy's Goal" (filmed as The Spy Ring (1938)).
- (1932) Novel: "The Branded Spy Murders".
- (1940) Novel: "The Bucharest Ballerina Murders".
- (1935) Novel: "The Bucharest Parade Murders".
- (1938) Novel: "The Cairo Garter Murders".
- (1936) Compilation: "Captain North's Three Biggest Cases".
- (1937) Novel (as Geoffrey Coffin; w/Henry Clay Gipson): "The Castle Island Case".
- (1950) Novel: "Dardenelles Derelict".
- (1936) Novel: "The Forgotten Fleet Mystery".
- (1931) Novel: "The Fort Terror Murders".
- (1957) Novel: "The Gracious Lily Affair".
- (1941) Novel (as Ward Weaver): "Hang My Wreath".
- (1950) Novel: "Himalayan Assignment".
- (1937) Compilation: "The Hong Kong Airbase Murders".
- (1943) Novel: "The Man from G-2".
- (1965) Novel: "Maracaibo Mission".
- (1941) Compilation: "Military Intelligence".
- (1960) Novel: "The Multi-Million-Dollar Murders".
- (1935) Novel (as Geoffrey Coffin): "Murder in the Senate".
- (1942) Compilation: "Oriental Division, G-2".
- (1941) Novel: "Rio Casino Intrigue".
- (1946) Novel: "Saigon Singer".
- (1960) Novel: "Secret Mission to Bangkok".
- (1930) Novel: "Seeds of Murder".
- (1936) Novel: "Seven Seas Murder".
- (1933) Novel: "The Shanghai Bund Murders".
- (1939) Novel: "The Singapore Exile Murders".
- (1932) Novel: "Spider House".
- (1933) Novel: "The Sulu Sea Murders".
- (1962) Novel: "Trouble in Burma".
- (1955) Novel: "Two Tickets to Tangier".
- (1931) Novel: "The Vesper Service Murders".
- (1935) Novel: "The Washington Legation Murders".
- (1932) Novel: "The Yellow Arrow Murders".
- (1963) Novel: "Zanzibar Intrigue".
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