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- [S226] Majdan Królewski Parish Records, 1895-1899 (Majdan Królewski), Krzątka year 1895, entry 93; Franciszek Leptuch birth and baptism.
- [S9348] Hamburg Passenger Lists, 1850-1934, Staatsarchiv Hamburg; Hamburg, Deutschland; Hamburger Passagierlisten; Volume: 373-7 I, VIII A 1 Band 264; Page: 2725; Microfilm No.: K_1831.
- [S9318] 1930 United States Federal Census, Year: 1930; Census Place: Passaic, Passaic, New Jersey; Page: 3B; Enumeration District: 0131; FHL microfilm: 2341112.
- [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.
- [S9308] U.S., City Directories, 1822-1995.
- [S9072] U.S., Find a Grave® Index, 1600s-Current.
- [S225] Majdan Królewski Parish Records, 1890-1894 (Majdan Królewski), Krzątka year 1893, entry 2; Jan Leptuch and Józefa Karkut marriage.
- [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: A - B.
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