|
|
| 1969 | 1970 | 1971 | 1972 | 1973 | |||||
 |
Sean Milwaukee, Wisconsin, USA |
 |
Donald Henderson Dutton, Ontario, Canada |
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 |
Jim Walker Syracucse, New York, USA |
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 |
Niels Marienlund | ||||||||
 |
Miranda Van Uden Netherlands |
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