Aart Baas in entry for Hendrik Mulder and Anna Baas, "Netherlands, Archival Indexes, Miscellaneous Records"
"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QLML-7RS4 : 22 August 2017), Aart Baas in entry for Hendrik Mulder and Anna Baas, Marriage 23 May 1847, Huizen, Noord-Holland, Netherlands; from database,
openarchives (https://www.openarch.nl : 2016); citing Haarlem, inventory number , record number 8; ; Noord-Hollands Archief.