|What a Mess!|
|Author||Marc Brown (cover credit)|
|Illustrator||Marc Brown (cover credit)|
|Published by||Advance Publishers, L.C.|
| Preceded by|
Arthur Loses His Patience
| Followed by|
Arthur's in Charge
What a Mess! is the twelfth book in Arthur's Family Values, a series of Arthur book titles aimed specifically at teaching morals. The moral of the book is "Getting Along with Your Sibling."
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