This book provides an excellent technical and historical overview of the Giulietta and Giulia family of small sporting roadsters, coupes and sedans. If an Alfa Romeo had one of the all-alloy four-cylinder engines and reached production, it's covered in the Alfa Romeo All-Alloy Twin Cam Companion. That means that even after the Giulia name was dropped-particularly in the United States-the many variants of Duetto, GTV, Berlina and Alfetta are covered, from 1954 through 1994 when the final Alfas-including the four-cylinder Spiders-were sold in the United States.