 1972 Atlanta, GA |
 1973 Kansas City, MO |
 1975 Milwaukee, WI |
 1977 New York, NY |
 1979 Seattle, WA |
 1981 Cleveland, OH |
 1985 Minneapolis, MN |
 1989 Aneheim, CA |
 1995 Arlington, TX |
 1994 Houston, TX |
