With his ability to travel through time using baseball cards and photographs, thirteen-year-old Joe and his mother go back to 1863 to ask Abner Doubleday whether he invented baseball, but instead find themselves in the middle of the Battle of Gettysburg.
- ISBN10 0060534451
- ISBN13 9780060534455
- Publish Date 30 January 2007 (first published 15 March 2005)
- Publish Status Active
- Publish Country US
- Imprint HarperCollins Publishers
- Format Paperback (US Trade)
- Pages 176
- Language English