Thank you for posting this.
You will find page scans of all these books at
www.archive.org - that's the best way to correct illegible sections.
The formatting of these needs MAJOR work, as you rightly say. One thing which badly needs doing is to make the table of contents of each book into hyperlinks.
Please don't take this as criticism - these is an extremely useful upload, but it could be made a lot better with a little work.