Artist corrections have been made to the mid-70s editions of Witch World and Year of the Unicorn. They have been changed from Harry R. Bennett to J. H. Breslow, and a section for Breslow has been created under Cover Artists. Thanks to Jay Watts over at andre-norton-books.com.
Also, in the midst of collecting, I have been researching the foreign editions that have been published of Andre Norton titles. Jay has been kind enough to add them to his website, along with much art work that I've found.