- 1Chapter I — Pirate Missile
- 2Chapter II — Undersea Survey
- 3Chapter III — Invisible Sub
- 4Chapter IV — Aerial Attack
- 5Chapter V — A Hunch Pays Off
- 6Chapter VI — The Caisson Clue
- 7Chapter VII — Porpoise Tag
- 8Chapter VIII — Date Trouble
- 9Chapter IX — A Magnetic Kidnaping
- 10Chapter X — Telephone Code
- 11Chapter XI — Square-Dance Hoax
- 12Chapter XII — Detection Test
- 13Chapter XIII — Enemy Frogmen
- 14Chapter XIV — A Propaganda Blitz
- 15Chapter XV — Mountain Hike
- 16Chapter XVI — The Gunman’s Surprise
- 17Chapter XVII — A Missing Amulet
- 18Chapter XVIII — Smiley the Sea Cow
- 19Chapter XIX — Flash from the Depths
- 20Chapter XX — A Lucky Blast
Tom Swift and the Electronic Hydrolung
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