Analog Synthesizers - Understanding, Performing, Buying - by Mark Jenkins
One of the most interesting books about synthesizers and synthesis is probably this one by Mark Jenkins, has 336 pages, and was published in 2007
The book starts with basics like 'what is analog' and goes through the aspects of analog sound by the hand of the different components of a synthesizer.
A large part of the book is about the history of synthesizers, and there are also a lot of interviews; with Robert (Bob) Moog, Keith Emerson, Hans Zimmer, Rick Wakeman, Jean-Michel Jarre and many more.
The book is complimented with a lot of nice black/white pictures and also includes a tuition and sound-sampling CD with over 30 different analog synthesizers, spread over 79 tracks