When Hank goes to kindergarten, he finally weans himself away from his dependency on his stuffed hippopotamus, Oogie.
- ISBN10 0688009360
- ISBN13 9780688009366
- Publish Date 1 January 1982
- Publish Status Out of Print
- Out of Print 12 November 2014
- Publish Country US
- Imprint Greenwillow Books
- Format Hardcover
- Pages 32
- Language English