1948 Michigan                     1970 Cornell
1949 Boston College               1971 Boston University
1950 Colorado College             1972 Boston University
1951 Michigan                     1973 Wisconsin
1952 Michigan                     1974 Minnesota
1953 Michigan                     1975 Michigan Tech
1954 RPI                          1976 Minnesota
1955 Michigan                     1977 Wisconsin
1956 Michigan                     1978 Boston University
1957 Colorado College             1979 Minnesota
1958 Denver                       1980 North Dakota
1959 North Dakota                 1981 Wisconsin
1960 Denver                       1982 North Dakota
1961 Denver                       1983 Wisconsin
1962 Michigan Tech                1984 Bowling Green
1963 North Dakota                 1985 RPI
1964 Michigan                     1986 Michigan State
1965 Michigan Tech                1987 North Dakota
1966 Michigan State               1988 Lake Superior State
1967 Cornell                      1989 Harvard
1968 Denver                       1990 Wisconsin
1969 Denver                       1991 Northern Michigan
 
Information from 1991 World Almanac and Book of Facts.
 
National Championships (last):
Michigan      7  (1964)
Wisconsin     5  (1990)
North Dakota  5  (1987)
Denver        5  (1969)
Minnesota     3  (1979)
Boston Univ.  3  (1978)
Michigan Tech 3  (1975)
Michigan St.  2  (1986)
RPI           2  (1985)
Cornell       2  (1970)
Colorado Coll 2  (1957)
five others   1  (No. Michigan '91, Harvard '89, Lake Superior State '88,
                  Bowling Green '84, Boston College '49)