1Tom Swift And His Big Tunnel
14Chapter 13: Tom's Explosive
2Chapter 1: An Appeal for Aid
15Chapter 14: Mysterious Disappearances
3Chapter 2: Explanations
16Chapter 15: Frightened Indians
4Chapter 3: A Face at the Window
17Chapter 16: On the Watch
5Chapter 4: Tom's Experiments
18Chapter 17: The Condor
6Chapter 5: Mary's Present
19Chapter 18: The Indian Strike
7Chapter 6: Mr. Nestor's Letter
20Chapter 19: A Woman Tells
8Chapter 7: Off for Peru
21Chapter 20: Despair
9Chapter 8: The Bearded Man
22Chapter 21: A New Explosive
10Chapter 9: The Bomb
23Chapter 22: The Fight
11Chapter 10: Professor Bumper
24Chapter 23: A Great Blast
12Chapter 11: In the Andes
25Chapter 24: The Hidden City
13Chapter 12: The Tunnel
26Chapter 25: Success
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