Keywords: Petrus Paulus van Berkum, 1939.jpg en Petrus Paulus van Berkum 1939 1939 Newspaper picture in Heldersche Courant 10 januari 1939 p 5 online at Kranten Regionaal Archief Alkmaar author other versions Anonymous-EU Uploaded with UploadWizard Petrus Paulus van Berkum |