- [S10305] Ancestry.com, Niederlande, ziviler Heiratsindex, 1795-1950, (Name: Ancestry.com Operations, Inc.; Location: Lehi, UT, USA; Date: 2016;), WieWasWie; Den Haag, Nederland; Trouwen.
Record for Wouter Karel van Baak
https://search.ancestry.com/cgi-bin/sse.dll?db=61286&h=3449615&indiv=try
- [S10767] Ancestry.com, New York State, Passenger and Crew Lists, 1917-1967, (Name: Ancestry.com Operations, Inc.; Location: Lehi, UT, USA; Date: 2008;), The National Archives at Washington, D.C.; Washington, D.C.; NAI Number: 2848504; Record Group Title: Records of the Immigration and Naturalization Service, 1787-2004; Record Group Number: 85; Series Number: A3998; NARA Roll Number: 541.
Record for Maria Van Baak
https://search.ancestry.com/cgi-bin/sse.dll?db=1277&h=11154421&indiv=try
- [S10185] Ancestry.com, Stammbaumindex der Geneanet-Gemeinschaft, (Name: Ancestry.com Operations, Inc.; Location: Lehi, UT, USA; Date: 2022;).
Record for Wouter Karel Van Baak
https://search.ancestry.com/cgi-bin/sse.dll?db=62476&h=4373703319&indiv=try
- [S10305] Ancestry.com, Niederlande, ziviler Heiratsindex, 1795-1950, (Name: Ancestry.com Operations, Inc.; Location: Lehi, UT, USA; Date: 2016;).
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