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KNOPECK, JEAN M. was born 4 May 1927, received Social Security number 106-20-7213 (indicating New York) and, Death Master File says, died 16 November 2003
Source: Death Master File (public domain). Check
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KNOPECK, JOSEPH M. was born 13 March 1928, received Social Security number 106-20-2358 (indicating New York) and, Death Master File says, died 17 October 1994
Source: Death Master File (public domain). Check
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KNOPECK, VALENTIEN was born 3 September 1886, received Social Security number 383-03-1520 (indicating Michigan) and, Death Master File says, died July 1965
Source: Death Master File (public domain). Check
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