2011, Minneapolis, Minnesota
2003, Scottsdale, Arizona
2002, Salt Lake City, Utah
1999, Seattle, Washington
1989, Phoenix, Arizona
1988, Juneau, Alaska
1982, Anchorage, Alaska
1982, Aurora, Colorado
1980, Fort Lauderdale, Florida
1978, Aurora, Colorado
1977, Atlanta, Georgia
1974, North Kingstown, Rhode Island
1971, Jamestown, Rhode Island
1969, Washington, District of Columbia
1966, Scottsdale, Arizona
1965, Pueblo, Colorado
1965, Jacksonville, Florida
1964, Tucson, Arizona
1963, Seattle, Washington
1962, Keokuk, Iowa