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 0061783862
- ISBN13 9780061783869
- Publish Date 2 December 2008 (first published 15 March 2005)
- Publish Status Unknown
- Out of Print 11 April 2013
- Publish Country US
- Publisher HarperCollins Publishers Inc
- Imprint HarperCollins
- Format eBook
- Pages 176
- Language English