THE HARDY BOYS
THE SECRET OF THE CAVES
By FRANKLIN W. DIXON
Author of
The Hardy Boys: The Tower Treasure
The Hardy Boys: The Secret of The Old Mill
The Hardy Boys: The Shore Road Mystery
ILLUSTRATED BY
Walter S. Rogers
NEW YORK
GROSSET & DUNLAP
PUBLISHERS
Made in the United States of America
MYSTERY STORIES FOR BOYS
By FRANKLIN W. DIXON