"Netherlands, Archival Indexes, Miscellaneous Records," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QLCN-M3Y6 : 23 August 2017), Cornelis de Jong in entry for Maria de Jong, Birth 29 Jul 1903, Laagnieuwkoop, Utrecht, Nederland; from database, openarchives (https://www.openarch.nl : 2016); citing Laagnieuwkoop, archive 463, inventory number 118-01, record number 6; ; Het Utrechts Archief.
https://familysearch.org/ark:/61903/1:1:QLCN-M3Y6
"Netherlands, Archival Indexes, Miscellaneous Records," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QLKT-HM2S : 9 September 2017), Cornelis de Jong in entry for Janna Maria Brouwer, Death 21 Feb 1915, Laagnieuwkoop, Utrecht, Nederland; from database, openarchives (https://www.openarch.nl : 2016); citing Laagnieuwkoop, archive 463, inventory number 420-13, record number 2; ; Het Utrechts Archief.
https://familysearch.org/ark:/61903/1:1:QLKT-HM2S
"Netherlands, Archival Indexes, Miscellaneous Records," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QLML-SPP4 : 22 August 2017), Cornelis de Jong in entry for Gerrit de Jong and Didrieka Johanna Elisabeth Mathijsen, Marriage 18 May 1927, Bussum, Noord-Holland, Netherlands; from database, openarchives (https://www.openarch.nl : 2016); citing Haarlem, inventory number , record number 50; ; Noord-Hollands Archief.
https://familysearch.org/ark:/61903/1:1:QLML-SPP4
"Netherlands, Archival Indexes, Miscellaneous Records," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QLKR-7SSX : 9 September 2017), Cornelis de Jong in entry for Maria de Jong, Death 19 Sep 1901, Laagnieuwkoop, Utrecht, Nederland; from database, openarchives (https://www.openarch.nl : 2016); citing Laagnieuwkoop, archive 481, inventory number 389-09, record number 9; ; Het Utrechts Archief.
https://familysearch.org/ark:/61903/1:1:QLKR-7SSX
"Netherlands, Archival Indexes, Miscellaneous Records," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QLCF-K2GF : 23 August 2017), Cornelis de Jong in entry for Neeltje de Jong, Birth 24 Nov 1904, Laagnieuwkoop, Utrecht, Nederland; from database, openarchives (https://www.openarch.nl : 2016); citing Laagnieuwkoop, archive 463, inventory number 118-02, record number 5; ; Het Utrechts Archief.
https://familysearch.org/ark:/61903/1:1:QLCF-K2GF
"Netherlands, Archival Indexes, Miscellaneous Records," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QLKR-WM77 : 9 September 2017), Cornelis de Jong, Death 23 Mar 1908, Laagnieuwkoop, Utrecht, Nederland; from database, openarchives (https://www.openarch.nl : 2016); citing Laagnieuwkoop, archive 463, inventory number 420-06, record number 1; ; Het Utrechts Archief.
https://familysearch.org/ark:/61903/1:1:QLKR-WM77
"Netherlands, Archival Indexes, Miscellaneous Records," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QLCB-RZD9 : 23 August 2017), Cornelis de Jong in entry for Maria de Jong, Birth 10 Aug 1901, Laagnieuwkoop, Utrecht, Nederland; from database, openarchives (https://www.openarch.nl : 2016); citing Laagnieuwkoop, archive 481, inventory number 50-26, record number 6; ; Het Utrechts Archief.
https://familysearch.org/ark:/61903/1:1:QLCB-RZD9