I have to admit that I never read a lot by her. There are many other writers and readers who are more qualified to pen tributes to her. However, I do recall one Norton book very fondly that I read when it first came out, back in 1979.
The book was "Seven Spells to Sunday" and a quick check of the cover art at http://www.andre-norton.org/coverart_gallery/seven_spells_to_sunday.htm confirmed that it is the book I remember. I remember loving that book, and reading it over and over again.
The only problem is, I can't remember the plot at all. Does anyone have an idea?
In the meantime, I've requested it from our local library network. It seems like an appropriate book to reread this month.