Thirteen-year-old Robert "Qwerty" Stevens uses the time machine he finds in his back yard to visit Thomas Edison's workshop in 1879, and there helps develop the electric light bulb, but then needs his sister's help to return to his own time.
- ISBN10 0689841248
- ISBN13 9780689841248
- Publish Date 1 July 2001
- Publish Status Out of Stock
- Publish Country US
- Imprint Simon & Schuster Children's Publishing
- Format Hardcover
- Pages 201
- Language English