00949cam a2200265 4500 431229714 TxAuBib 20200731120000.0 021126s1972||||||||||||||||||||||||eng|u 78181844 9780448095127 0448095122 TxAuBib Keene, Carolyn. The message in the hollow oak. New York, NY : Grosset & Dunlap, 1972. 181 p. : illus. ; 20 cm. Her Nancy Drew mystery stories ; 12 Nancy Drew tackles a mystery professional detectives failed to solve--finding a valuable centuries-old message in a hollow oak tree in Illinois. 720L Lexile. Accelerated Reader AR MG 5.3 6.0 5623EN. 20200731. MYSTERY AND DETECTIVE STORIES. Her Nancy Drew mystery stories ; 12.