00813cam a2200229 4500 770595410 TxAuBib 20081210120000.0 760506t19651964||||||||||||||||||||eng|u 66008426 TxAuBib Dixon, Franklin W. The secret of the caves [Book] / by Franklin W. Dixon. New York : Grosset & Dunlap, 1965. ©1964. 175 p. : illus. ; 20 cm. Hardy Boys, The Frank and Joe have many dangerous encounters in trying to find a missing professor and solving the case of suspected sabotage at a radar station. 19990713. Mystery and detective stories. The Hardy Boys.