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VONBORCKE, HANS U. was born 29 January 1905, received Social Security number 086-28-2776 (indicating New York) and, Death Master File says, died 12 April 1989
Source: Death Master File (public domain). Check
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VONBORCKE, HELENA was born 18 May 1906, received Social Security number 100-12-9700 (indicating New York) and, Death Master File says, died June 1977
Source: Death Master File (public domain). Check
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VONBORCKE, OTTOKAR R. was born 8 April 1915, received Social Security number 102-30-9435 (indicating New York) and, Death Master File says, died 23 May 1998
Source: Death Master File (public domain). Check
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