Jack Dempsey Jack Dempsey William Harrison "Jack" Dempsey (June 24, 1895 – May 31, 1983), nicknamed "Kid Blackie" and "The Manassa Mauler", was an American professional boxer who competed from 1914 to 1927, and reigned as the world heavyweight champion from 1919 to 1926. A cultural icon of the 1920s, Dempsey's aggressive fighting style and exceptional punching power made him one of the most popular boxers in history. Many of his fights set financial and attendance records, including the first million-dollar gate. Dempsey is ranked tenth on "The Ring" magazine's list of all-time heavyweights and seventh among its Top 100 Greatest Punchers,
Manassa, Colorado Church, and a meetinghouse for The Church of Jesus Christ of Latter-day Saints. The oldest church in Colorado is located in nearby Conejos, about southwest of Manassa, near the town of Antonito. The community-at-large, and people from all over the San Luis Valley and beyond, celebrate Manassa Pioneer Days with a parade on two days, horse races, rodeo, motorcross races, demolition derby, fireworks, entertainment, barbecues, and 5K run. A carnival at Pioneer Days brings the Tilt-a-Whirl, bumper cars, a merry-go-round and other midway rides. Bandstand entertainment and vendor booths line Manassa's city park on Main Street. One of the oldest