1971, Arlington, Virginia
1970, Wilmington, Delaware
1969, Charleston, West Virginia
1968, Dallas, Texas
1968, Nashville, Tennessee
1968, Washington, District of Columbia
1968, Boston, Massachusetts
1968, Honolulu, Hawaii
1967, Jackson, Mississippi
1966, Boston, Massachusetts
1965, Charleston, West Virginia
1965, Richmond, Virginia
1965, Houston, Texas
1963, Houston, Texas
1962, Pasadena, Texas
1962, Baltimore, Maryland
1961, Hartford, Connecticut
1960, Fort Worth, Texas
1955, Los Angeles, California
1954, Dallas, Texas