Harold is back with his purple crayon, and this time the Earth isn't big enough for him. Harold is off to the sky, or more specifically, to Mars. His latest adventure starts in the desert, but it doesn't take him long to remember that rockets and deserts go hand in hand, and he is off into space.
- ISBN10 0747535906
- ISBN13 9780747535904
- Publish Date 16 October 1997 (first published 1 January 1957)
- Publish Status Out of Print
- Out of Print 27 July 2010
- Publish Country GB
- Imprint Bloomsbury Publishing PLC
- Format Hardcover
- Pages 64
- Language English