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- [S229] Majdan Królewski Parish Deaths, 1889-1905, 1918-1927 (Majdan Królewski), Wola Rusinowska year 1926, act 4; Maciej Grosiak death and burial.
- [S4033] U.S., Passport Applications, 1795-1925, National Archives and Records Administration (NARA); Washington D.C.; Roll #: 2210; Volume #: Roll 2210 - Certificates: 262350-262849, 02 Apr 1923-03 Apr 1923.
- [S4033] U.S., Passport Applications, 1795-1925, National Archives and Records Administration (NARA); Washington D.C.; Roll #: 2469; Volume #: Roll 2469 - Certificates: 391850-392349, 11 Apr 1924-11 Apr 1924.
- [S16] New York, U.S., Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957, Year: 1906; Arrival: New York, New York, USA; Microfilm Serial: T715, 1897-1957; Line: 4; Page Number: 90.
- [S9348] Hamburg Passenger Lists, 1850-1934, Staatsarchiv Hamburg; Hamburg, Deutschland; Hamburger Passagierlisten; Volume: 373-7 I, VIII A 1 Band 185; Page: 3046; Microfilm No.: K_1797.
- [S241] Majdan Births, 1865-1891 (Majdan Królewski), year 1872, act 26; Maciej Grosiak birth and baptism.
- [S121] 1900 United States Federal Census, Year: 1900; Census Place: Passaic Ward 1, Passaic, New Jersey; Roll: 990; Page: 11; Enumeration District: 0096.
- [S16] New York, U.S., Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957, Year: 1906; Arrival: New York, New York; Microfilm Serial: T715, 1897-1957; Microfilm Roll: Roll 0813; Line: 4; Page Number: 90.
- [S9348] Hamburg Passenger Lists, 1850-1934, Staatsarchiv Hamburg; Hamburg, Deutschland; Hamburger Passagierlisten; Volume: 373-7 I, VIII A 1 Band 210; Page: 992; Microfilm No.: K_1808.
- [S16] New York, U.S., Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957, The National Archives and Records Administration; Washington, D.C.; Passenger and Crew Lists of Vessels Arriving at and Departing from Ogdensburg, New York, 5/27/1948 - 11/28/1972; Microfilm Serial or NAID: T715, 1897-1957.
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