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| Pioneer Spirit | 1908 | 1911 | 1915 | 1916 | 1937 | 1946 | 1947 | 1948 |
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| 1950 | 1951 | 1952 | 1953 | 1954 | 1956 | 1958 | 1959 |
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| 1960 | 1961 | 1965 | 1969 | 1970 | 1971 |