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- [S9389] 1910 United States Federal Census, Year: 1910; Census Place: Rockvale, Fremont, Colorado; Roll: T624_119; Page: 6A; Enumeration District: 0079; FHL microfilm: 1374132.
- [S9078] U.S., Social Security Applications and Claims Index, 1936-2007.
- [S7090] Colorado, U.S., County Marriage Records and State Index, 1862-2006.
- [S9318] 1930 United States Federal Census, Year: 1930; Census Place: Rockvale, Fremont, Colorado; Page: 7B; Enumeration District: 0029; FHL microfilm: 2339976.
- [S192] U.S., Army Transport Service, Passenger Lists, 1910-1939, The National Archives at College Park; College Park, Maryland; Record Group Title: Records of the Office of the Quartermaster General, 1774-1985; Record Group Number: 92; Roll or Box Number: 485.
- [S9322] 1920 United States Federal Census, Year: 1920; Census Place: Rockvale, Fremont, Colorado; Roll: T625_164; Page: 14A; Enumeration District: 70.
- [S99] Colorado, U.S., Steelworks Employment Records, 1887-1979, Steelworks Center of the West; Pueblo, CO.
- [S9100] U.S., Social Security Death Index, 1935-2014, Social Security Administration; Washington D.C., USA; Social Security Death Index, Master File.
- [S9282] 1940 United States Federal Census, Year: 1940; Census Place: Rockvale, Fremont, Colorado; Roll: m-t0627-00463; Page: 7A; Enumeration District: 22-31.
- [S225] Majdan Królewski Parish Records, 1890-1894 (Majdan Królewski), Majdan year 1890, act 4; Jan Sudoł and Anna Kozioł marriage.
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