Starting during 1869, Matson took a leading part in the councils of the
Illinois Republican Party. As a member of the state governor's staff and the
Grand Army of the Republic, he was promoted first to major and later to colonel. He served as clerk of the Harrison Street Police Department and subsequently as a Justice of the Peace. He was elected
Cook County Coroner in 1880 as the nominee of the Republican Party. In 1882, at the Cook County Republican convention, Seth Hanchett won the Republican nomination for
Cook County sheriff over Matson, who was vying for the position. Hanchett would go on to win the general election. During May 1886, while Matson was Deputy Sheriff of Cook County, the
Haymarket Riot resulted in the death of several policemen. A number of arrests were made and charges were brought against eight men who were incarcerated in the
Cook County Jail supervised by Matson. Later in 1886, he succeeded Seth Hanchett as Sheriff of Cook County. He was a delegate from Illinois to
1888 Republican National Convention. In 1899, Matson was appointed superintendent of the
Lincoln Park postal station, succeeding
Hermann Lieb. At the time of his death, Matson was the senior member of the law firm of Matson & Edwards in Chicago. ==References==