Originally published: New York : Grosset & Dunlap, 1965
Electronic reproduction; Available via World Wide Web
CONTENTS; FOREWORD; I: THE TOWER OF LONDON; II: JET TO AFRICA; III: NAIROBI; IV: NGOGO; V: DIAMONDS AGAIN; VI: KANDI; VII: THE ORANGE AIRPLANE; VIII: THE PRETTY PEBBLE; IX: VISITORS; X: THE YELLOW STONE; XI: THE TEST TUBES; XII: ADDING IT UP; XIII: LONG JACK ROBERTSON; XIV: THE END OF THE STORY;