Pieter Schaap en tant qu·Äôentrâ©e de Lammert Schaap, "Pays-Bas, Index d·Äôarchives, Registres d·Äôâ©tat civil, 1600-2000"
"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QLMF-R9LQ : 24 October 2019), Pieter Schaap in entry for Lammert Schaap, Death 10 Oct 1858, Huizen, North Holland, Netherlands; from database,
openarchives (https://www.openarch.nl : 2016); citing Haarlem, record number 78; ; Noord-Hollands Archief.