"Netherlands, Archival Indexes, Vital Records," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QL4C-TH89 : 22 August 2017), Laurina Hendrica Helena Pröpper, Birth 11 Jun 1868, Maastricht, Limburg, Nederland; from database, openarchives (https://www.openarch.nl : 2016); citing Burgerlijke Stand in Limburg, archive 12.059, inventory number 47, record number 473; Burgerlijke Stand in Limburg; Regionaal Historisch Centrum Limburg.