This book covers Vespa widemount models from 1951 to 1954. It is from France so obviously all the text is in French..
It has many pictures of a full engine disassembly with all the fancy purpose built tools of the day, two page pull out diagrams of parts and exploded drawings, and full specification and wear tolerances for major parts. Front and back cover insides have old french adds for helmets, and piston rings. Handy if you speak French but very useful regardless.
