Freemasonry Museum (The Hague, the Netherlands)
Chair for the history of Hermetic philosophy and related currents (University of Amsterdam, the Netherlands)
Bibliotheca Philosophica Hermetica (Amsterdam)
Library & Museum of Freemasonry (London, UK)
ESSWE - European Society for the Study of Western Esotericism
EXESESO - Exeter Centre for the Study of Esotericism (UK)
Centro de Estudios Históricos de la Masonería Española (Spain)
Centro de Estudos Maçónicos Fernando Pessoa (Portugal)
