FamilySearch (https://familysearch.org/pal:/MM9.1.1/NXYG-YL1 : accessed 17 January 2015), Catharina Servais in entry for Maria Philippine Huelster, ; citing DUESSELDORF STADT,RHEINLAND,PRUSSIA; FHL microfilm 939,813. » Bronnen » Stamboom Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online"> FamilySearch (https://familysearch.org/pal:/MM9.1.1/NXYG-YL1 : accessed 17 January 2015), Catharina Servais in entry for Maria Philippine Huelster, ; citing DUESSELDORF STADT,RHEINLAND,PRUSSIA; FHL microfilm 939,813. » Bronnen » Stamboom Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf » Genealogie Online">