Booktip II - Vintage Synthesizers by Mark Vail

Another interesting read; 
The subtitle of this book: “Groundbreaking instruments and pioneering designers of electronic music synthesizers” explains a lot about the content...

This neat 300-page book, written in 1993 by Mark Vail, one of the writers of Keyboard magazine, is a very complete overview of 30 years of synthesizer history - from 1962 until 1992.
The book is full with background-stories and funny anecdotes by designers and early users and it is loaded with nice (mostly black and white) pictures.

The buying guide, the giant glossary and the comprehensive index in the back of the book make this book an unmissable read for anyone interested in (analog) synthesizers, sequencers and drum machines.

ISBN: 0-87930-275-5
More info at http://www.markvail.com/

Booktip I - Analog Synthesizers by Mark Jenkins

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

ISBN: 978-0-240-52072-8