from the mixed-up files...

Konigsburg, E.L. (1967). From the mixed-up files of Mrs. Basil E. Frankweiler. New York: Atheneum.
ISBN: 978-1416949756

Claudia Kincaid, the 11-year old protagonist of this Newbery Award-winning classic, knows the first rule of any good tween adventure story: ditch the parents and run away. Run away she does, to New York's Metropolitan Museum of Art. Armed with a violin case stuffed with underwear and socks, her curmudgeonly younger brother, Jamie, and $24.43 (in change), Claudia leads the reader on a romp full of mystery, close calls, and humor.

Once Claudia and Jamie make their escape to New York from suburban Connecticut, there are all sorts of logistics to figure out: where to sleep, what to eat, where to store their extra underwear and socks, and how to elude the museum’s night guards. A mysterious new acquisition is displayed at the museum, and a mysterious adventure begins as Claudia and Jamie try to figure out the origins of this piece.

A great choice for young tweens, this mainstay of school and library reading lists is funny, exciting, and clever. No sex, drugs, or rock and roll here; just a lot of good, old-fashioned adventure that withstands the test of time.