H M Peel to be republished
You'll have to wait until 2009 (though at the rate this year seems to be going, it'll fly by), but at last, Hazel's books are going to be available again. The first two will be Easter the Showjumper and Night Storm the Flat Racer.
Fidra Books (of course) are the ones who are bringing Hazel back to us. Here's the link.