| Year | Debater | Record | Result |
|---|---|---|---|
| 1996 | Keely Blumentritt & Katie Squires | 2-4 | Did Not Clear |
| 1996 | Jeremy Bratt & Vivek Sharma | 1-5 | Did Not Clear |
| 1992 | Jeff Melville & Jamie Groth | 4-0 | Quarterfinalist |
| 1991 | Jamie Groth & Jeff Melville | 0-4 | Did Not Clear |
| 1973 | Unknown | Did Not Clear | |
| 1972 | Unknown | Did Not Clear | |
| 1971 | Mary Lin Smith, Phil Carlson, Jamie Kinzie & Tim Stoltman | Unknown | Did Not Clear |
| 1970 | 2-8 | 22nd Place | |
| 1966 | 3-7 | 21st Place | |
| 1965 | 5-5 | 14th Place | |
| 1963 | 1-9 | 21st Place | |
| 1962 | 8-2 | 4th Place | |
| 1961 | 3-7 | 17th Place | |
| 1960 | 1-5 | 15th Place | |
| 1958 | 1-5 | 15th Place | |
| 1957 | 2-4 | 14th Place | |
| 1956 | 2-4 | 15th Place | |
| 1955 | 5-1 | 4th Place | |
| 1954 | Nancy Cribbs, Mary Haake, Tom Jensen & Lorens Brynestad | 3-3 | 9th Place |
| 1953 | 4-2 | 4th Place | |
| 1952 | 4-2 | 7th Place | |
| 1951 | 2-4 | 8th Place | |
| 1950 | Donna Sweazey, Paul Haake, Marlene Gesell & Eugene Mathot | 0-6 | 8th Place |
| 1949 | Margaret Burke, Paul Haake, Donna Sweazey & JoAnn Swinsen | 3-3 | 4th Place |
| 1948 | Roger Challberg & David Christenson | 1-3 | Unknown |
| 1947 | Nancy Buck & David Christenson | 1-3 | Unknown |
| 1946 | Kirk Belville & Shirley Worner | 0-3 | 7th Place |
| 1937 | N/A | Quarterfinalist | |
| 1912 | N/A | Semifinalist | |
| 1906 | Eugene Hunter, Whit Pfeiffer & Edward Scherer | N/A | Semifinalist |