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FIRFAROFF, KATHERINE was born 14 December 1918, received Social Security number 109-26-0284 (indicating New York) and, Death Master File says, died 15 October 1997
Source: Death Master File (public domain). Check
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FIRFAROFF, KIRILL was born 17 August 1916, received Social Security number 211-30-6412 (indicating Pennsylvania) and, Death Master File says, died March 1986
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FIRFAROFF, NIKOLAY was born 21 May 1920, received Social Security number 126-26-5751 (indicating New York) and, Death Master File says, died 24 April 1998
Source: Death Master File (public domain). Check
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FIRFAROFF, NINA was born 20 March 1892, received Social Security number 066-28-6518 (indicating New York) and, Death Master File says, died November 1979
Source: Death Master File (public domain). Check
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