Jack Dempsey was born William Harrison Dempsey, his family often referred to him as Harry, when he fought in the western mining town saloons he was "Kid Blackie" and it was not until his brother Bernie who often fought under the pseudonym was to fight the best mucker in Teller County, a tough brawny fighter George Coplen, and the Dempsey's were not the type to turn down a fight. This historic fight which has been forgotten forged a champion at the Lyric Opera House which no longer stands. Above block 23 426-434 is the last known footprint of the Lyric Opera House and it is where the Double Eagle Casino stands today.