This is a good historical introduction to Violin Making which was originally published in the 19th century. I've read some modern publications (articles and booklets, mostly), which seem more practical for today's maker. However, I would say that this book is core literature on violin making.
The book covers the history of the violin and it has good descriptions of the parts and processes of violin making. I owned three copies of the book; one I gave away and one of them is from the London publisher, with full-size foldouts, and is in hardcover (this hardcover edition is called, "Violin Making as it Is and Was"). The softcover edition (shown in the cover picture) has the diagrams in the back of the book that are drawn to a smaller scale and can be enlarged.
The line drawings are good, and the prose is often eloquent and fun to read.
As with any trade, there is no substitute for a good mentor or master who can teach the art first-hand. However, this book is a good compliment to hands-on learning for any apprentice or serious hobbyist.