About the Röhling family : The website by Dr. Ronald Ritter Rüling von Rüdingen und Rüdennen with the genealogy of the Rüling branch. : The website by Herr Volker Röhlig about the extended family of the Rulikonen. : The visitorsmine, named after Markus Röhling. 

General : The Adam Ries association publishes genealogies on Saxon families. : City archive of Freiberg. : Website about Annaberg in Saxony. : State archive of Saxony. : About the mining industry in Saxony. : About the history of the Ore mountains. : Website of the German Noble association. : Genealogy bureau of The Netherlands. : Dutch Genealogical Association. : Dutch association for genealogy 'Ons Voorgeslacht'. : City archive of Rotterdam. : many sources about the history of The Netherlands. : Archive of Delft and surrounding municipalities. : City archive of Vlaardingen. : Royal Libaray of The Netherlands.