1996, Selma, Alabama
1990, Palo Alto, California
1988, Tampa, Florida
1984, Cambridge, Massachusetts
1981, Kent, Washington
1981, , Mississippi
1979, Washington, District of Columbia
1979, Costa Mesa, California
1978, Omaha, Nebraska
1971, Seattle, Washington
1970, Glen Arbor, Michigan
1967, Harrison, New York
1967, New York, New York
1967, Oakland, California
1967, Seattle, Washington
1966, Portland, Oregon
1964, Lincoln City, Oregon
1960, Oakland, California
1957, Palo Alto, California
1956, Hilton Head Island, South Carolina
