Tom Swift Jr
5. Tom Swift and His Atomic Earth Blaster (1954) (as by Victor Appleton II (House Name))
6. Tom Swift and His Outpost in Space (1955) (as by Victor Appleton II (House Name))
7. Tom Swift and His Diving Seacopter (1956) (as by Victor Appleton II (House Name))
9. Tom Swift on the Phantom Satellite (1956) (as by Victor Appleton II (House Name))
10. Tom Swift and His Ultrasonic Cycloplane (1957) (as by Victor Appleton II (House Name))
11. Tom Swift and His Deep-Sea Hydrodome (1958) (as by Victor Appleton II (House Name))
12. Tom Swift in the Race to the Moon (1958) (as by Victor Appleton II (House Name))
13. Tom Swift and His Space Solartron (1958) (as by Victor Appleton II (House Name))
14. Tom Swift and His Electronic Retroscope (1959) (as by Victor Appleton II (House Name))
15. Tom Swift and His Spectromarine Selector (1959) (as by Victor Appleton II (House Name))
16. Tom Swift and the Cosmic Astronauts (1960) (as by Victor Appleton II (House Name))
17. Tom Swift and the Visitor from Planet X (1961) (as by Victor Appleton II (House Name))
18. Tom Swift and the Electronic Hydrolung (1961) (as by Victor Appleton II (House Name))
19. Tom Swift and His Triphibian Atomicar (1962) (as by Victor Appleton II (House Name))
20. Tom Swift and His Megascope Space Prober (1962) (as by Victor Appleton II (House Name))
21. Tom Swift and the Asteroid Pirates (1963) (as by Victor Appleton II (House Name))
22. Tom Swift and His Repelatron Skyway (1963) (as by Victor Appleton II (House Name))
23. Tom Swift and His Aquatomic Tracker (1964) (as by Victor Appleton II (House Name))
24. Tom Swift and His 3-D Telejector (1964) (as by Victor Appleton II (House Name))
25. Tom Swift and His Polar-Ray Dynasphere (1965) (as by Victor Appleton II (House Name))
26. Tom Swift and His Sonic Boom Trap (1965) (as by Victor Appleton II (House Name))
27. Tom Swift and His Subocean Geotron (1966) (as by Victor Appleton II (House Name))
28. Tom Swift and the Mystery Comet (1966) (as by Victor Appleton II (House Name))
29. Tom Swift and the Captive Planetoid (1967) (as by Victor Appleton II (House Name))

Hardy Boys
37. The Ghost at Skeleton Rock (1957) (as by Franklin W Dixon)
38. Mystery at Devil's Paw (1959) (as by Franklin W Dixon)
39. Mystery of the Chinese Junk (1959) (as by Franklin W Dixon)
58. The Sting of the Scorpion (1978) (as by Franklin W Dixon)
59. Night of the Werewolf (1979) (as by Franklin W Dixon)
60. Mystery Of The Samurai Sword (1979) (as by Franklin W Dixon)
62. The Apeman's Secret (1980) (as by Franklin W Dixon)
67. The Outlaw's Silver (1981) (as by Franklin W Dixon)
74. Tic-Tac-Terror (1982) (as by Franklin W Dixon)

Man From Planet-X (writing as Hunter Adams)
1. The She-Beast (1975)
2. Tiger by the Tail (1975)
3. The Devil to Pay (1977)

A.I. Gang
2. The Cutlass Clue (1986)

Buck Rogers (with Gray Morrow)
Buck Rogers in 25th Century (1981)