00617cam a2200205 4500 243225734 TxAuBib 20020612120000.0 020612s2001||||||||||||||||||||||||eng|u 9780807554913 080755491X TxAuBib Warner, Gertrude Chandler. The disappearing staircase mystery [PBK]. Morton Grove, IL : Albert Whitman & Company, 2001. 115pp. Boxcar children, The 20020612. The Boxcar children.