8apr17 The persons behind some streetnames of Amsterdam
 plaquettes on the house/street walls
Jacob van Heemskerck, Jan Huygen van Linschoten, jacob Roggeveen, Antonio van Diemen, Nel Breedveld, Willem Barentz

28Febr17 Leonardo da Vinci Tentoonstelling [3]
 in de Beurs van Berlage Amsterdam