Daniel replies:

Actually, that book never got written.  Instead, I wrote a book called Bushman Lives.  After that, the publisher changed its policy regarding the manner in which they would consider books of mine--I found the new policy unacceptable, and stopped offering them books...so no Escape to Dwerg Mountain.  (However, Molly the Dwerg appears in Bushman Lives!)  Maybe your student would like to give it a try.