Mason A. ThayerMason A. Thayer was a member of the Wisconsin State Assembly.BiographyThayer was born on November 17, 1839, in Conneaut, Ohio. He later moved to Sparta, Wisconsin.CareerThayer was a member of the Assembly in 1882. Additionally, he was Register of Deeds of Sparta and Chairman of the Monroe County, Wisconsin Board of Supervisors. He was a Republican.