During his time in office, Cox served on the following committees:
Agriculture and Horticulture (1935–1938)
Corporations (1935–1938)
Drainage (1935–1936)
Education (1935–1938)
Elections (1935–1936)
Military Affairs (1935–1936)
State Development and Immigration (1935–1936)
Civil Administration (1937–1938)
Cooperatives and Cooperation (1937–1938)
Dairy Products and Livestock (1937–1938)
Public Highways (1937–1938)
Public Welfare and Social Legislation (1937–1938)
Towns and Counties (1937–1938)
Cox chaired the Cooperatives and Cooperation committee during his second term.
Cox's time in office began on January 8, 1935, and concluded on January 2, 1939. His district included representation for the counties of Kanabec, Mille Lacs, and Sherburne.
Outside of the Minnesota Legislature, Cox was a farmer and the owner of a flour mill.
Personal life and death
Cox was married and had six children. He resided in Becker, Minnesota.