01294cam a2200337 i 4500 623562350 TxAuBib 20160427120000.0 251106|||||||||||||||||||||||||||||und|u 9780807580875 0807580872 9780590426749 0590426745 TxAuBib rda Warner, Gertrude Chandler, 1890-1979. Boxcar Children: The Tree House Mystery. Albert Whitman & Co : 1969, Chicago. 127 pages. txt rdacontent n rdamedia nc rdacarrier Boxcar Children, The ; 14 From the new tree house the Aldens can keep an eye on the house next door. That house has a very old and special secret...and the Boxcar Children are determined to find out what it is!. 470L Lexile. Decoding demand: 83 (very high) Semantic demand: 91 (very high) Syntactic demand: 78 (high) Structure demand: 85 (very high) Lexile. Accelerated Reader AR LG 3.3 2 5314. 20160427. Detective and mystery fiction. lcgft The Boxcar Children ; 14. TXKPL