He later returned to Wisconsin, wrote his autobiography, and was active in the State Historical Society of Wisconsin.
In 1900, his remains were transferred to the new building of the State Historical Society of Wisconsin.
He was assigned to the standing committee on agriculture, and to a special joint committee investigating the State Historical Society of Wisconsin.
The memorial at the cemetery was the first official state historical marker authorized by the State Historic Society of Wisconsin.
From 1979 to 1980, Treffert was president of the State Medical Society of Wisconsin.
User guide to the microfilm collection filmed by the State Historical Society of Wisconsin.
Attwood's papers are held by the State Historical Society of Wisconsin.
Madison: State Historical Society of Wisconsin, 1998.
Madison: State Historical Society of Wisconsin, 1976.
Madison: State Historical Society of Wisconsin, 1973.
