The DISRAELI GEARS website is an excellent source for derailleur information. The website is organized by Model, Brand, Country, Decade, and Theme.
In the Italian section you can find information and photographs about Campagnolo, Galli, Gian Robert, Gipiemme, Miche, Ofmega, Regina, Rino, and Roto derailleurs.
Photos: from Disraeli Gears: Campagnolo C Record, Regina America, Ofmega Mistral
Stories, including cycling trip stories, for the Italian Cycling Journal welcome; contact veronaman@gmail