April fools.

Two boys create a monster that mysteriously appears and disappears all over town until they have to reveal their prank to get out of a tight spot.

Bibliographic Details
Main Author:	Krahn, Fernando
Format:	Book
Language:	English
Published:	New York : Dutton, [1974]
Edition:	[1st ed.].
Subjects:	April Fools' Day > Fiction. Stories without words.

Evans: Library Stacks