00808cam a2200229 4500 121308902 TxAuBib 20060630120000.0 921110s1972||||||||||||||||||||||||eng|u 72077108 /AC 9780448089362 044808936X TxAuBib Dixon, Franklin W. The secret of Pirates' Hill [HC] / by Franklin W. Dixon. New York : Grosset & Dunlap, [1972] 178 p. : illus ; 20 cm. Hardy boys mystery stories, 36 Hired to locate an old Spanish cannon, the Hardy brothers uncover an even greater treasure after perilous underwater adventures. 20060630. Hardy boys mystery stories, 36.