This is volume 7 in Boxcar Children .

This book has been graded for interest at 8-12 years.

There are 159 pages in this book. This book was published 1990 by Perfection Learning .

David Cunningham was born in Ayrshire and educated at Glasgow University. He has worked, at various times, as a bookseller, a freelance journalist and an educational administrator. His short stories have appeared in magazines and anthologies, and a couple have been broadcast on Radio 4. CloudWorld is his first novel for children.