Campaign billboard 'This man . . . Denholm U.S. Congress' with a 'Thank You!' on it after Frank Denholm won the race for the U.S. Senate seat in 1970

Campaign billboard for Frank Denholm reads Congress Denholm Work

Elect Frank E. Denholm for U.S. Congress 'A New Strong Voice for South Dakota - Farmer - Businessman - Former FBI Agent - Educator - Lawyer (Democratic Candidate for all the people!)' campaign billboard in Brookings, South Dakota

Elect Frank E. Denholm for U.S. Congress 'A New Strong Voice for South Dakota - Farmer - Businessman - Former FBI Agent - Educator - Lawyer (Democratic Candidate for all the people!)' campaign billboard