| Year | Location | Winner | Rating | Teams | Schools | Players | Host | Organizer | Comment |
| 2006 | Internet (ICC) | ||||||||
| 1974 | Silver Spring, MD | Leslie Leow (MIT) | ? | ? | |||||
| 1973 | Detroit, MI | Harold Boas (Harvard) | ? | ? | |||||
| 1972 | New York, NY | John Frankle (Harvard) | ? | ? | |||||
| 1971 | New York, NY | Jorge Massana (Baltimore CC) | ? | ? | |||||
| 1970 | New York, NY | Lubomir Kavalek (George Washington Univ.) | ? | ? | |||||
| 1969 | Montreal, Canada | Camile Coudari (McGill) | 43 | 208 | |||||
| 1969 | New York, NY | Andy Soltis (CCNY) | ? | ? | Continental Intercollegiate Indiv. for ICLA | ||||
| 1967 | Hoboken, NJ | Carl Wagner (MIT) | 24 | 166 | |||||
| 1966 | State College, PA | John Meyer (MIT) | 27 | 163 | |||||
| 1965 | New York, NY | Marc Yoffie (CCNY) | 27 | 183 | |||||
| 1963 | South Bend, IN | Henry Davis (Univ. of Texas) | 31 | 103 | |||||
| 1961 | Washington, DC | Larry Gilden (Univ. of Maryland, College Park) | ? | 50 | |||||
| 1959 | State College, PA | Leslie Ault (Columbia) | ? | 18 | |||||
| 1957 | Erie, PA | Charles Kalme (Univ. of Pennsylvania) | ? | 22 | |||||
| 1955 | New York, NY | Edmar Mednis (NYU) | 17 | 26 | |||||
| 1953 | New York, NY | Albert weissman (NYU) | 22 | 36 | |||||
| 1951 | Philadelphia, PA | Jimmey Sherwin (Columbia) | ? | 29? | |||||
| 1949 | New Brunswick, NJ | Paul Dietz (Pittsburgh) | 19 | 40 | |||||
| 1947 | New York, NY | Robert Byrne (Yale) | 28 | 38 | |||||
| 1945 | New York, NY | Kiven Plesset (CCNY) | 14 | 23 |