00900cam a2200241 4500 1162186208 TxAuBib 19990524120000.0 991220s1987||||||||||||||||||||||||eng|u 9780448095028 0448095025 TxAuBib Keene, Carolyn. The hidden staircase / by Carolyn Keene. New York : Grosset & Dunlap, 1987. 182 p. : ill. ; 19 cm. Nancy Drew mystery stories ; ; 2 20210121. Nancy Drew mystery stories ; ; 2. TXKIP