00826cam a2200217 4500 184815508 TxAuBib 19970718120000.0 740504s1967||||||||||||||||||||||||eng|u 67005330 //r84 DLC DLC ICrlF TxAuBib Keene, Carolyn. The clue in the crossword cipher. New York : Grosset & Dunlap, [1967] 177 p : illus ; 20 cm. Her Nancy Drew mystery stories Nancy Drew travels to Peru to solve a mystery involving a long-lost treasure and a crossword clue carved into an ancient wooden plaque. J Follett Library Resources. Mystery and detective stories. Her Nancy Drew mystery stories.