Surprises according to Humphrey /
Betty G. Birney.
- New York : G. P. Putnam's Sons, c2008.
- 136 p. ; 22 cm.
While continuing to help his classmates solve their problems, Humphrey, pet hamster of Longfellow School's Room 26, faces many surprises, like rolling in a hamster ball, a substitute janitor who might be an alien, and the possibility of Mrs. Brisbane retiring.