Lambert Schaap en tant qu·Äôentrâ©e de Pieter Schaap et de Judikje van As, "Netherlands, Archival Indexes, Vital Records, 1600-2000"
"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QLMV-ZD8X : 22 August 2017), Lambert Schaap in entry for Pieter Schaap and Judikje van As, Marriage 19 May 1839, Huizen, Noord-Holland, Netherlands; from database,
openarchives (https://www.openarch.nl : 2016); citing Haarlem, inventory number , record number 5; ; Noord-Hollands Archief.