That Commodore book by Brian Bagnell (A company on the edge?) has not been scanned so I see no reason why something even more niche as a 2nd revision of this book would be scanned and uploaded. And look what happened to that book, the Amiga revision of that book has been cancelled so you have to find a 1st release where the 16bit stuff wasn't removed to split the book into 8bit and the 'coming soon' Amiga years........which are now not going to be released.
However things like Computer & Video Games magazines missing supplements or one off yearbooks I paid through the nose for over the years if I scanned them you can bet your ass they would be on piratebay pretty quickly lol which is why I never released the scans of certain things.