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This article is about the book. You may be looking for the episode.
Arthur's Mystery Envelope (book)
Arthurs Mistery Envelope
Author *Marc Brown (cover credit)
Illustrator Marc Brown
Publication date April 1, 1998
Published by Little, Brown and Company
ISBN 0316115479
Publication Order
Preceded by
Followed by
Arthur and the Scare-Your-Pants-Off Club
Arthur's Mystery Envelope is a 1998 chapter book based on the episode of the same name.

Summary

It looks like trouble when the principal asks Arthur to a large envelope marked CONFIDENTIAL home to his mom. His friends try to guess what's inside. It might just be information on... summer school! However, it turns out to be tax documents.

Cover Gallery