I disagree, Goat Driver. My excerpt falls under Fair Use, and could be posted. But out of deference to you, I changed my post.
You should read up on copyright law. Posting copyrighted work even with credit does not satisfy the requirements of the law, unless specifically indicated by the author. This author compiled all of that for a CD, presumably for sale, and rarely would someone put a product they sell also in the Public Domain. So his motivation was not likely the betterment of man, but profit, hence the copyright in the first place. Yes, he wants to share this with everyone......that pays his price. No one else has a right to the information without his express permission.
I'll not argue or discuss this further. It is my sole prerogative to decide on deleting links to protect this site from possible litigation, and if I decide posting any link puts us in jeopardy, I will without hesitation delete it.
Do not compare this site to the Internet in general. There are links to many free and Public Domain documents on the Internet, of course. But this isn't one of them. Surely you recognize that there are thousands upon thousands of site that do not respect the law in general, so how is it you use the Internet to decide what is legal or moral, or proper on the issue of posting links to copyrighted documents for this site? You can't.