More interesting-looking Christmas books:
This one you apparently either love or you hate, as the author traces pagan practices that added to the legend of Santa Claus:
Santa Claus: Last of the Wild Men
Don't know the contents of this volume, but everyone seems to love it:
The Story of Santa Claus
The Real St. Nicholas
Plus Jeff Guinn has done a sequel to his charming Autobiography of Santa Claus, starring Layla (Mrs. Claus) in Mrs. Claus Saves Christmas.
And I still heartily recommend Britney Ryan's wonderful modern-yet-old-fashioned The Legend of Holly Claus, which reads like an old Frank Stockton or L. Frank Baum story and is accompanied by the most beautiful pen-and-ink illustrations.