Standalone Novels in chronological order
1938
Sabotage Broadcast
Buy1939
All Roads Lead to Friday
Buy1940
9781448213528
The Trojan Horse
Buy1940
9780006164869
Wreckers Must Breathe / Trapped
Buy1941
9780330342346
Attack Alarm
Buy1946
9780099577799
Dead and Alive
Buy1947
9780330342384
The Killer Mine
Buy1947
9780099577423
The Lonely Skier / Fire in the Snow
Buy1948
9780854561940
The Blue Ice
Buy1948
9780330342391
Maddon's Rock / Gale Warning
Buy1949
9780099577836
The White South / The Survivors
Buy1950
9780006164876
The Angry Mountain
Buy1950
9780001841758
Cocos Gold (As: Ralph Hammond)
Buy1951
9780345274168
Air Bridge
Buy1952
9780345274137
Campbell's Kingdom
Buy1953
9780001959231
Black Gold on the Double Diamond (As: Ralph Hammond)
Buy1954
9780006126010
The Strange Land / The Naked Land
Buy1956
9780345274144
The Wreck of the Mary Deare
Buy1958
9780345274120
The Land God Gave to Cain
Buy1960
9780006127260
The Doomed Oasis
Buy1965
9780786214846
The Strode Venturer
Buy1971
9780345274106
Levkas Man
Buy1973
9780006134411
Golden Soak
Buy1974
9780006145929
North Star
Buy1977
9780394411620
The Big Footprints
Buy1978
9780394505794
The Last Voyage
Buy1980
9780330342155
Solomons Seal
Buy1982
9780812584004
Black Tide
Buy1985
9780002229715
High Stand
Buy1988
9780812503913
Medusa
Buy1991
9780330321761
Isvik
Buy1993
9781855926721
Target Antarctica
Buy1996
9780333632901
The Delta Connection
Buy