00823cam a2200253 4500 83970992 TxAuBib 19730101120000.0 ||||||s1990||||||||||||||||||||||||und|u 91046349 9780448089034 0448089033 TxAuBib Dixon, Franklin W. The secret of the old mill / by Franklin W. Dixon. New York : Grosset & Dunlap, 1990. 174 p. ; 20 cm. At head of title: The Hardy boys. Teenage detectives Frank and Joe Hardy investigate a case of counterfeiting. 20110101. Mystery and detective stories. Counterfeits and counterfeiting Fiction. Rogers, Walter S.