| Year | Debater | Record | Result |
|---|---|---|---|
| 1975 | Unknown | Did Not Clear | |
| 1971 | Unknown | Did Not Clear | |
| 1970 | 8-2 | 3rd Place | |
| 1967 | 5-5 | 13rd Place | |
| 1966 | 5-5 | 12nd Place | |
| 1965 | 7-3 | 6th Place | |
| 1962 | 2-8 | 23rd Place | |
| 1961 | 5-5 | 10th Place | |
| 1956 | 1-5 | 18th Place | |
| 1955 | 5-1 | 5th Place | |
| 1953 | 3-3 | 7th Place | |
| 1952 | 0-6 | 15th Place | |
| 1951 | 1-5 | 12nd Place | |
| 1950 | Maurice Ness, Gayle Beecher, Dave Brown & Marlene Precht | 3-3 | 4th Place |
| 1949 | Vincent Arankog, Norman Baker, Lon Curtiss & Pat Frisch | 3-3 | 6th Place |
| 1948 | Lon Curtis, Duane Helgeson & Clinton Schroeder | 1-3 | Unknown |
| 1935 | N/A | Semifinalist | |
| 1925 | N/A | Unknown | |
| 1908 | John Fabian, Florence Leach & Walter Unger | N/A | Quarterfinalist |
| 1906 | William Bell, Axel Nelson & Charles Nyberg | N/A | Quarterfinalist |
| 1904 | Bert Boen, Caleb C. Hogan & Harry Jackson | N/A | Finalist |
| 1903 | Charles Bayley, Madge Chappell, Hans A. Hanson & Caleb Hogan | N/A | Champion |
| 1902 | Harold Braatelien, Colvin G. Butler & Hans A. Hanson | N/A | Semifinalist |