By following the instructions in the coded message, Tim finds his birthday present.
- ISBN10 0060201029
- ISBN13 9780060201029
- Publish Date 1 September 1991 (first published 1 January 1972)
- Publish Status Out of Print
- Out of Print 16 June 2021
- Publish Country US
- Imprint HarperCollins Publishers
- Edition Miniature ed.
- Format Hardcover
- Pages 26
- Language English