"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database, FamilySearch (
https://familysearch.org/ark:/61903/1:1:QLMX-D6W6 : 22 August 2017), Christophorus Bernardus Joannes Willebrordus Héman and Engelina Cornelia de Bruin, Marriage 29 May 1902, Amsterdam, Noord-Holland, Netherlands; from database, openarchives (https://www.openarch.nl : 2016); citing Haarlem, inventory number , record number Reg.17 fol. 40v; ; Noord-Hollands Archief.