ESPN Internet Ventures
Espn: Defeats Didn't Dampen Dempsey
Jack Dempsey was known as one of the world's most popular and greatest heavyweight boxers. At this site from ESPN, you can find interesting biographical and statistical information about this Hall of Fame fighter.
Other
Box Rec: Julio Cesar Chavez
This Wiki-created site provides statistics and some biographical information about Mexican boxing champion Julio Cesar Chavez.
Other
Jack Dempsey Museum
Located in Manassa, Colorado this museum houses artifacts from Jack Dempsey's career plus many photographs highlighting his famous boxing championships.
Mocomi & Anibrain Digital Technologies
Mocomi: Muhammad Ali Biography
Interesting biographical information, fun facts, and famous quotes about Muhammad Ali, three-time lineal World Heavyweight Champion.