I don't know anything other than what it says below. I looked at nbp.org and it doesn't say that PG texts are being used. It also doesn't give titles. I don't think there is a trademark violation since they are reformatting the files but it's interesting that they are producing their own DVD. I never personally had a problem with reading PG plain text books and I'm blind. I don't really see the point in the DVD, especially not for $39 US. They also have two CD sets, one for kids and one of British literature. I didn't look at them. National Braille press http://www.nbp.org/ic/nbp/publications/index.html will carry Super Dvd #1, a dvd containing 3,626 books, 646 plays, 496 magazines and 2,753 stories. All this material is available in the public domain on the Internet, but Richard Seltzer http://www.samizdat.com/ has in many cases reformatted it for clear and simple text access. The dvd costs $39, and a listing of its contents is at http://www.nbp.org/ic/nbp/DVD1.html