Re: Have you guys read Championship Fighting by Jack Dempsey?
I read several books on boxing by unknown "specialists", after that I had impression that boxing books sucks until...I read jack's book. It is a very condensed manual with many deep and what is most important proven concepts and ideas. It is a bit outdated in terms of stance and movements, but has a solid material on developing ko punches. Do not try to read it through fast, it requires meditation on the content, because, like I said, it is very condensed.