Chris Godfrey of U.N.E.X.A.

1 Blast Off at Woomera (1957)
     aka Blast Off at 0300
2 The Domes of Pico (1958)
     aka Menace from the Moon
3 Operation Columbus (1959)
     aka First on the Moon
4 Moon Base One (1961)
     aka Outpost on the Moon
5 Expedition Venus (1962)
6 Destination Mars (1963)
7 Terror by Satellite (1964)
8 Journey to Jupiter (1965)
9 Mission to Mercury (1965)
10 Spaceship to Saturn (1967)
11 The Mohole Mystery (1968)
     aka The Mohole Menace
12 Nearly Neptune (1968)
     aka Neptune One is Missing
13 First Contact? (1971)
14 Passage to Pluto (1973)
15 Tony Hale, Space Detective (1973)
16 Murder on Mars (1975)
17 The Caves of Drach (1977)
18 The Last Disaster (1978)
19 The Blue Aura (1979)
20 The Dark Triangle (1981)