_Bright up-to-date stories, full of information as well as of adventure. Read the first volume and you will want all the others written by Mr. Young._
1. THE MOTOR BOYS _or Chums through Thick and Thin_ 2. THE MOTOR BOYS OVERLAND _or A Long Trip for Fun and Fortune_ 3. THE MOTOR BOYS IN MEXICO _or The Secret of the Buried City_ 4. THE MOTOR BOYS ACROSS THE PLAINS _or The Hermit of Lost Lake_ 5. THE MOTOR BOYS AFLOAT _or The Cruise of the Dartaway_ 6. THE MOTOR BOYS ON THE ATLANTIC _or The Mystery of the Lighthouse_ 7. THE MOTOR BOYS IN STRANGE WATERS _or Lost in a Floating Forest_ 8. THE MOTOR BOYS ON THE PACIFIC _or The Young Derelict Hunters_ 9. THE MOTOR BOYS IN THE CLOUDS _or A Trip for Fame and Fortune_ 10. THE MOTOR BOYS OVER THE ROCKIES _or A Mystery of the Air_ 11. THE MOTOR BOYS OVER THE OCEAN _or A Marvelous Rescue in Mid-Air_ 12. THE MOTOR BOYS ON THE WING _or Seeking the Airship Treasure_