CONTENTS
CHAPTER I "SUSPICIOUS SANDY"
CHAPTER II GHOSTS, GUM AND GEMS
CHAPTER III THE SKY PATROL ORGANIZES
CHAPTER IV MYSTERY OVER THE OCEAN
CHAPTER V MYSTERY IN THE FOG
CHAPTER VI THE END OF THE CHASE
CHAPTER VII THE SWAMP GIVES UP A CLUE
CHAPTER VIII SANDY MEETS A "SUSPECT"
CHAPTER IX JEFF ENCOUNTERS A "JINX"
CHAPTER X LARRY'S CAPTURE
CHAPTER XI "POP! GOES OUR MYSTERY!"
CHAPTER XII THE HOODOOED AIRPLANE
CHAPTER XIII THE "HOODOO" STRIKES
CHAPTER XIV DICK HANDLES A CONTROL JOB
CHAPTER XV A TRAP IS BAITED
CHAPTER XVI THE "BAIT" VANISHES
CHAPTER XVII A FIGHT FOR A FORTUNE
CHAPTER XVIII OUTWITTED!
CHAPTER XIX A BAFFLING DISCOVERY
CHAPTER XX SANDY TURNS OVER A NEW LEAF
CHAPTER XXI THE SKY PATROL GIVES UP
CHAPTER XXII THE "GROUND CREW" TAKES HOLD
CHAPTER XXIII LARRY "SOLOS"
CHAPTER XXIV A PUZZLING DEVELOPMENT
CHAPTER XXV HIGH WINGS!
CHAPTER XXVI THE RACE
CHAPTER XXVII SANDY'S DISCOVERY
CHAPTER XXVIII NIGHT IN THE HANGAR
CHAPTER XXIX SANDY'S TRAIL
CHAPTER XXX DICK ENCOUNTERS THE "GHOST"
CHAPTER XXXI A TRIUMPH FOR THE ENEMY
CHAPTER XXXII A DOUBLE PURSUIT
CHAPTER XXXIII A BATTLE ABOVE THE CLOUDS
CHAPTER XXXIV THE EMERALDS ARE FOUND
Transcriber's Notes
“Oh—my shoulder!” the man cried out in sudden anguish. (Page 93)
By VAN POWELL
THE SAALFIELD PUBLISHING COMPANY Akron, Ohio New York
Copyright MCMXXXII THE SAALFIELD PUBLISHING COMPANY The Haunted Hangar Made in the United States of America