Member (Republican) of the Illinois House of Representatives (1971-1986) from Oneida (Knox County). Served the 45th, 47th, and 73rd Districts in western Illinois.
Major committee assignments included: Agriculture (1971-1976, 1983-1986), and Counties & Townships (1971-1986). Also served on the County Problems Commission (1971-1984), and was Chairman of the Township Government Laws Commission (1973-1978). Before election to the House, McMaster served 18 years in local government, including as Chairman of the Knox County Board of Supervisors.
From the description of Papers, 1963-1982 (bulk 1973-1982) (Abraham Lincoln Presidential Library). WorldCat record id: 39312593