When Charlie's eyes turn square from watching television and everything else starts looking square too, he cures himself by stimulating his mind with books, puzzles, pictures, and nature.
- ISBN10 0671694456
- ISBN13 9780671694456
- Publish Date 1 April 1990 (first published 30 July 1987)
- Publish Status Active
- Publish Country US
- Publisher Simon & Schuster
- Imprint Little Simon
- Format Paperback (US Trade)
- Language English