See http://archiv.twoday.net/stories/4946163/ If MSN has digitized Public Domain content in cooperation with the Open Content Alliance download links to the Internet Archive (IA) were given in MSN Live Search Books. After the end of Live Search the books are still downloadable at the IA but there will be no full text search.
There were no download links for the proprietary MSN Public Domain content especially the Cornell library cooperation. If Cornell (MSN has digitized 75,000 books from Cornell) doesn't make this books available (or donate it to the Internet Archive) this content will disappear next week. It is possible to circumvent the MSN digital rights management with simple means. I would like to recommend to do so and to save as many books as possible for the Public Domain.
Klaus Graf
wikisource-l@lists.wikimedia.org