Jan Kreumer in entry for Andries Verboom and Gerritjen Kreumer, "Nederland, Indexen van de Archieven, Allerhande Archiefstukken"
"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QLM2-8ZLH : 22 August 2017), Jan Kreumer in entry for Andries Verboom and Gerritjen Kreumer, Marriage 25 Aug 1814, Amsterdam, Noord-Holland, Netherlands; from database,
openarchives (https://www.openarch.nl : 2016); citing Haarlem, inventory number , record number Reg.4 fol. 57v; ; Noord-Hollands Archief.