Montecatini – set up in 1888 – merged with Edison in 1966 creating the Montecatini Edison Spa that, in 1990 took the name Montedison and in 1991, Edison Spa (see also the work by Duccio Bigazzi for the Istituto lombardo per la storia del movimento di liberazione in Italia (Lombardia Institute for the History of the Liberation Movement in Italy), Gli Archivi d’impresa nell'area milanese. Censimento descrittivo, Milan, Editrice Bibliografica 1990, pages 31-37 and the later adjournment of the census realized by the Centro in 2000).