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- [S5277] Komorów Births, 1890-1921 (Ostrowy Tuszowskie), year 1895, act 26; Ludwik Babula birth and baptism.
- [S208] Web: Bremen, Germany, Passenger Lists Index, 1907-1939, E6181FEB; E445B6C1; E000604A; Archive Number: FSI-08.11.1913_EI.
- [S16] New York, U.S., Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957, The National Archives in Washington, DC; Washington, DC, USA; Passenger and Crew Lists of Vessels Arriving at New York, New York, 1897-1957; Microfilm Serial or NAID: T715; RG Title: Records of the Immigration and Naturalization Service, 1787-2004; RG: 85.
- [S1805] Connecticut, U.S., Federal Naturalization Records, 1790-1996, National Archives at Boston; Waltham, Massachusetts; ARC Title: Naturalization Record Books, 12/1893-9/1906; NAI Number: 2838938; Record Group Title: Records of District Courts of the United States, 1685-2009; Record Group Number: Rg 21.
- [S9318] 1930 United States Federal Census, Year: 1930; Census Place: Stamford, Fairfield, Connecticut; Page: 8B; Enumeration District: 0205; FHL microfilm: 2339995.
- [S9116] U.S., World War I Draft Registration Cards, 1917-1918, Registration State: Connecticut; Registration County: Fairfield.
- [S9282] 1940 United States Federal Census, Year: 1940; Census Place: Stamford, Fairfield, Connecticut; Roll: m-t0627-00499; Page: 12A; Enumeration District: 1-155.
- [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: Stamford, Fairfield, Connecticut; Roll: 104; Page: 7; Enumeration District: 13-63.
- [S9305] Connecticut, U.S., Death Index, 1917-2017.
- [S6947] Ostrowy Tuszowskie Parish Marriages, 1800-1880, Komorów year 1879, act 6; Wojciech Babula and Rozalia Stróż marriage.
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