This recording has both the first fight in Miami February 25, 1964 and the May 25, 1965 rematch. At the time of the first bout, Cassius Clay had not yet changed his name to Muhammad Ali. The heavyweight champion of the world in early 1964 was a seemingly unbeatable behemoth known as Sonny Liston.
Henry Armstrong, who had held the world featherweight, lightweight, and welterweight titles -- all at the same time - is widely acknowledged to be the all-time greatest fighter. Armstrong was forced to relinquish the featherweight title when he could no longer make the weight, and he lost the lightweight title back to Ambers in 1939. Only the world welterweight title remained, and Henry successfully defended that crown 19 times before losing it to Fritzie Zivic.
The Colgate Sports Newsreel was a radio program focusing on sports. It has been called "one of the most successful and most listened-to shows in radio history" and "one of radio broadcasting's most entertaining and engaging programs." However, much of the information reported as fact was actually fiction.