REX LEE’S MYSTERIOUS FLIGHT
REX LEE; ROUGH RIDER OF THE AIR
REX LEE; AERIAL ACROBAT
REX LEE; TRAILING AIR BANDITS
REX LEE; FLYING DETECTIVE
GROSSET & DUNLAP, Publishers, NEW YORK
THE HARDY BOYS SERIES
By FRANKLIN W. DIXON
The Hardy Boys are sons of a celebrated American detective, and during vacations and their off time from school they help their father by hunting down clues themselves.