| Sources |
- [S9125] New Jersey, U.S., Death Index, 1848-1878, 1901-2017.
- [S9100] U.S., Social Security Death Index, 1935-2014, Social Security Administration; Washington D.C., USA; Social Security Death Index, Master File.
- [S9078] U.S., Social Security Applications and Claims Index, 1936-2007.
- [S9282] 1940 United States Federal Census, Year: 1940; Census Place: Newark, Essex, New Jersey; Roll: m-t0627-02420; Page: 2A; Enumeration District: 25-297.
- [S9318] 1930 United States Federal Census, Year: 1930; Census Place: Newark, Essex, New Jersey; Page: 6A; Enumeration District: 0163; FHL microfilm: 2341073.
- [S226] Majdan Królewski Parish Records, 1895-1899 (Majdan Królewski), Rozalian year 1899, act 11; Joanna Hajduk birth and baptism.
- [S16] New York, U.S., Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957, Year: 1904; Arrival: New York, New York, USA; Microfilm Serial: T715, 1897-1957; Line: 2; Page Number: 33.
- [S16] New York, U.S., Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957, Year: 1913; Arrival: New York, New York, USA; Microfilm Serial: T715, 1897-1957; Line: 8; Page Number: 130.
- [S9308] U.S., City Directories, 1822-1995.
- [S9284] New Jersey, U.S., Marriage Index, 1901-2016, New Jersey State Archives; Trenton, New Jersey; Marriage Indexes; Index Type: Bride; Year Range: 1915-1919; Surname Range: F - H.
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