The first offering for Appendix N+ is the Magic Kingdom For Sale/Sold Series.
Magic Kingdom for Sale-Sold!
Publication Date: 1986
Follow Ben Holiday on an adventure to an impossible magic kingdom where none is as they seem. The series includes 6 books spanning two generations of heroes.
Publication Date: 1987
Dirk the prism cat's introduction to the series, as unicorns race through Chicago! Seriously, the best damn non-sequitur ever!
Wizard at Large ISBN: 0-345-36227-6
Publication Date: 1988
If I had magic, I'd want it to be like powers of Questor Thews. Unsure, uncertain but always on the right side.
The Tangle Box ISBN: 0-345-38700-7
Publication Date: 1994
Squick results when The Tangle Box opens.
Witches' Brew ISBN: 0-345-38702-3
Publication Date: 1995
Brookes explores Fey magic with the introduction of Mistaya, Willow and Ben's daughter.
A Princess of Landover
Publication Date: 2009
Mistaya is loaded with charm and magic, but being Ben's daughter means this story isn't going where you think. It's a horrible ending to a great series, but an excellent reason to write one more book.