Born in New Brighton, Ramsey County, Minnesota; all four of his grandparents were German immigrants. He attended public schools and the University of Nebraska School of Engineering; interrupted his education during the Second World War to serve in the United States Army, with service in the European Theater of Operations; employed by the Minnesota Mining & Manufacturing Company; international representative of OCAW-AFL-CIO 1947–1958; member of the Minnesota House of Representatives, 1950–1958; elected as a member of the Democratic-Farmer-Labor Party to the 86th, 87th, 88th, 89th, 90th, 91st, 92nd, 93rd, and 94th congresses, (January 3, 1959 – January 3, 1977); was not a candidate for reelection to the 95th Congress in 1976; established a consulting firm; died on May 29, 2005, in Scottsdale, Arizona.
- United States Congress. "Joseph Karth (id: K000014)". Biographical Directory of the United States Congress. Retrieved on 2008-02-18
- "Joseph Karth". Find a Grave. Retrieved 2008-02-18.
- A Letter to USMC about UFOs written by Congressman Karth 1961
- The Papers of Joseph E. Karth are available for research use at the Minnesota Historical Society.
|U.S. House of Representatives|
| U.S. Representative from Minnesota's 4th congressional district