In the middle of an Iowa cornfield, four children find a magic wall that enables them to travel through time and space.
- ISBN10 1299237053
- ISBN13 9781299237056
- Publish Date 1 January 2009
- Publish Status Active
- Out of Print 25 February 2015
- Publish Country US
- Imprint Random House Books for Young Readers
- Format eBook
- Language English