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- [S8096] Trześń Parish Birth Extracts, 1890-1926, Nadbrzezie year 1895, act 9; Mieczysława Adamczyk birth and baptism.
- [S9318] 1930 United States Federal Census, Year: 1930; Census Place: Minneapolis, Hennepin, Minnesota; Page: 2A; Enumeration District: 0010; FHL microfilm: 2340824.
- [S9322] 1920 United States Federal Census, Year: 1920; Census Place: Minneapolis Ward 1, Hennepin, Minnesota; Roll: T625_832; Page: 17A; Enumeration District: 23.
- [S9308] U.S., City Directories, 1822-1995.
- [S9282] 1940 United States Federal Census, Year: 1940; Census Place: Minneapolis, Hennepin, Minnesota; Roll: m-t0627-01975; Page: 8A; Enumeration District: 89-6.
- [S9114] 1950 United States Federal Census, National Archives at Washington, DC; Washington, D.C.; Seventeenth Census of the United States, 1950; Year: 1950; Census Place: Minneapolis, Hennepin, Minnesota; Roll: 2815; Page: 5; Enumeration District: 89-249.
- [S9100] U.S., Social Security Death Index, 1935-2014, Social Security Administration; Washington D.C., USA; Social Security Death Index, Master File.
- [S9374] Minnesota, U.S., Death Index, 1908-2017, Minnesota Department of Health; St Paul, Minnesota, USA; Minnesota, Death Index, 1908-2017.
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