Terry Scott, a young archaeology professor, seeks Nancy's help in unearthing a secret of antiquity which can only be unlocked by three back keys. While on an archaetological expedition in Mexico, Terry and Dr. Joshua Pitt came across a clue to the buried treasure. The clue was a cipher carved on a stone tablet. Before the professors had time to translate the cipher, the tablet disappeared and with it Dr. Pitt! Terry tells Nancy of his sussuspicions of the Tinos, a Mexican couple posing as scientists, who vanished the same night as Dr. Pitt. Recommended for ages 8 to 12.
Format: Hardcover Vendor: Grosset & Dunlap Publication Date: 1951 Dimensions: 7.72 X 5.09 X 0.71 (inches) ISBN: 0448095289
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