Interesting history of Weber carbs, with general theory and specific info on a range of side and downdraft models, but dated (1988). Good for restorers, but if you're doing a new 32/36 or 34 DGEC conversion on a Jeep, for example, it's not covered in this book.
Informative and well written:
This book goes beyond being a mere product manual. It is, instead an education into the science of fuel/air intake for the internal combustion engine. Of course, it thoroughly vets its core topic, the Weber/Dellorto carburetor line. You'll learn about the evolution of the Weber carburetor and find out, in depth, how to work on these wonderfully engineered products.
Good enough to read as literature, not just a tech book:
Good historic and technical info.
Weber Carburetors by Pat Braden:
The book does not contain a schematic diagram of the 40 IDF, one of the most popular carburetors for Porsche 356 and is not of much value to me. I would not have purchased it if I had known this.