Career
Dunn began his career with Christian Brothers College (Canadian Broadcasting Company) of the Saint Louis Municipal League, the city’s de facto second division. Dunn played the 1916-1917 season with Ben Millers, winning another league title. At the end of the season, Dunn enlisted in the United States. Navy for two years.
When he returned to Saint Louis in 1919, he re-signed with Ben Millers becoming the team’s starting center forward.
However, that championship put them into the one-time American Professional Soccer Championship. In 1925, the Saint Louis Soccer League and American Soccer League boycotted the National Challenge Cup.
In its place, they competed in what they called the American Professional Soccer Championship which pitted the champions of the two leagues. The Ben Millers faced the Boston Wonder Workers for a two-game series.
The first, played in Saint Louis, went to Ben Millers, with Dunn scoring the game’s lone goal.
The final, and deciding, game took place two weeks later in Saint Louis. Dunn again scored in the loss. Over his nine seasons with Ben Miller, Dunn scored fifty-three goals.