Boxing Hall of Fame on youtube has some really great stuff. If you look around beyond youtube there are also other great archival sources you can go to. Most big media companies that have been around for a long time should have an archive section where you can find some good stuff. Finding boxing content is somewhat of an art. With enough experience you start figuring out where the best stuff is for certain things.
Not film.....but magazines Sport and Sports Illustrated have great archived articles that tell build up to, the fight itself, and post fight observations that were current & accurate, and not the "seen through rose colored glasses" from the so -called "experts"of today.
