Arthur's Mystery Envelope
Stephen Krensky
Paperback
(Little Brown and Company, March 15, 1998)
It looks like trouble when the principal asks Arthur to take home a large envelope marked CONFIDENTIAL. His friends try to guess what's inside. It just might be information on ... summer school! Will Arthur face the consequences or pretend to lose the envelope? - In chapter book format, for children who are ready to read on their own, this mysterious adventure will surely be a hit among Arthur fans.