North American Championships
Incomplete list of championships:
North American Championships - New York, USA - October 1973
North American Championships - Milwaukee, USA - July 1974
North American Championships - Miami, USA - July 24-26 1975
North American Championships - Shreveport, USA - September 1981
North American Championships - Houston, USA - September 15-17 1983
North American Championships - Beaumont, USA - August 14-17 1985
North American Championships - Toronto, Canada - August 1987