This 'Encyclopaedia of all the great analogue synthesizers and keyboards' is written by Peter Forrest and is probably one of the most detailed analog synthesizers-catalogs out there.
The books list all analog synthesizers that were ever produced, and is spread across 2 parts with a total of 600 pages, filled with useful info about manufacturers, statistics and lots of pictures in black and white.
Both books also have a 16-page full-color-section, stuffed with cool pictures.
The first edition of Part One (A-M) was published in 1994, two years before Part Two (N-Z) arrived. The Revised version of Part One was published in 1998.
Although the layout of the books and some b/w pictures may look a bit cheap the books are highly informative if you are interested in analogue synthesizer history.
ISBN Part One A-M revised 0 9524377 2 4
ISBN Part Two N-Z 0 9524377 1 6
Susurreal Publishing: http://www.vemia.co.uk/susurreal/