In 1912 he was appointed by Governor Francis E. McGovern as humane officer for Monroe County, Wisconsin, where he was active in reform movements.
Frederick was also a probation officer and attorney who brought cases before state courts and tribunals, including the Railroad Commission of Wisconsin.
[3] Frederick fought in World War I, serving as a commanding officer in the United States Army.
He was the author of animal welfare policies and also worked to ensure that members of the legislature and its committees were sober during meetings.
[10] Frederick unsuccessfully ran to represent Wisconsin's 7th congressional district in the United States Congress.