A brand-new Humphrey adventure, written and published as a special edition for World Book Day 2008. Chosen alongside nine other top children's book brands, this special edition "Humphrey" title will retail at GBP 1, exchanged for book tokens given to thousands of schoolchildren nationwide on World Book Day. Previous "World Book Day" books have sold approximately 250,000 copies and introduced the authors to a significantly larger readership.
- ISBN10 1440699313
- ISBN13 9781440699313
- Publish Date 5 February 2009 (first published 21 February 2008)
- Publish Status Active
- Publish Country US
- Imprint Putnam Publishing Group
- Format eBook
- Pages 128
- Language English