Trouble according to Humphrey
Betty G. Birney.
- New York, NY : G. P. Putnam's Sons, an imprint of Penguin Group (USA), [2014]
- 135 p. ; 22 cm.
- Humphrey adventures ; 10 .
- Birney, Betty G. Humphrey adventures ; 10. .
Humphrey, the pet hamster of Longfellow School's Room 26, learns that his classroom is full of secrets, the most important of which is that a student will be leaving soon.