... I had one of Holt's omnibus books and one of the novels in it involved Santa and his elves. I can't remember much of the plot any more and can't remember what the title was; I would have liked to read it again over the Xmas season but I must have garage-saled the book, I couldn't find it. Does this ring a bell with anyone so I can find it again? (I checked Holt's website and didn't see anything that matched the description, but it just had the copy from the back of the book and I didn't know until I actually read the book that it involved Santa.)

bump 12.29: I looked a little further and it sounds as if the title I was looking for was Grailblazers