I purchased this excellent documentary from a video store in the 1980s. My version is listed as being 101 minutes. This documentary in part formed the basis of my intense interest in old-school boxing, which led to my writing several biographies of fighters, from John L. Sullivan to Jack Johnson. For that, I owe it a debt of gratitude.
This documentary had guys like Jim Jacobs and Bill Cayton behind it. They owned massive amounts of archival footage, and nice sprinklings from their collection are included throughout. Jacobs was a boxing historian and fight film collector. He and Cayton eventually co-managed a man by the name of Mike Tyson.
As a youth, it was so amazing for me to discover that history actually was captured on film, and I could see it and form my own opinions. The footage is excellent, narration and writing top notch, and I enjoyed the theme music. I can still hear it in my head to this day.