"New York, County Naturalization Records, 1791-1980," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QPZJ-JJ22 : 20 August 2019), Edward Alexander Ostroski, 1923; citing Naturalization, New York, United States, citing multiple County Clerk offices of New York; FHL microfilm 005411808.
"New York, New York City Marriage Records, 1829-1938", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:Q2C6-4RCT : 17 August 2022), Edward A Ostroski and Jennie Michalski Broucki or Bourcki, 1925.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JBRB-KJM : 7 January 2021), Edward Ostrowski, Sep 1980; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing). (notes: birth date discrepancy) .
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