Apologies for using English, but after five years of getting it together, I have to tell everybody that my massive tombe about Trolleybus models miniatures and the real things is finally available by going to
http://www.trolleybooks.co.uk/modeltrolleybuses.html. Be warned, it is big, full of pictures and surprising snippets of trolleybus history from around the world, including of course, Italy, with consideable detail of Rivorossi and its forebear, the 1:43 Minobus.
best
Ashley