"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:QLZ4-XVHJ : 16 November 2020), Elisabeth Catharina Geertruida Pröpper in entry for Hendrik Monné, Birth 15 Sep 1897, Utrecht, Nederland; from database, openarchives (https://www.openarch.nl : 2016); citing Utrecht, archive 481, inventory number 144-02, record number 2296; ; Het Utrechts Archief.
Tod: https://www.familysearch.org/ark:/61903/1:1:QLKT-134F