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 east and the San Juan Mountains to the west. According to the United States Census Bureau, the town has a total area of , all land. Manassa experiences a semi-arid climate (Köppen "BSk") with cold, dry winters and warm, somewhat wetter summers. As of the census of 2000, there were 1,042 people, 362 households, and 280 families residing in the town. The population density was 1,110.9 people per square mile (428.0/km²). There were 398 housing units at an average density of 424.3 per square mile (163.5/km²). The racial makeup of the town was 81.00% White, 0.48% African American, 1.63% Native