Family Members
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John Henry "Henry" Koopmann
1889–1984
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Martha Gerhardine Koopmann Goetze
1891–1969
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Emma M Koopmann Heermann
1892–1953
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Gustave Koopmann
1895–1979
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Ernest Herman Koopmann
1896–1947
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Alvin Frederick Koopman
1897–1968
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Bertha Frieda Koopmann Klarmann
1899–1974
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Theodore A "Ted" Koopman
1901–1970
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Hugo Martin Koopmann
1903–1999
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