When a place in a book called Happy World becomes just too perfect and sweet for a tiger named Knuckle and a bear named Potty, they decide the only way to get out is to erase it.
- ISBN10 1429954825
- ISBN13 9781429954822
- Publish Date 22 May 2012
- Publish Status Cancelled
- Out of Print 27 December 2012
- Publish Country US
- Imprint Henry Holt & Company
- Format eBook
- Pages 64
- Language English