Gibson Amplifiers 1933Â-2008 is the first and only guide on Gibson amps! This 192-page book includes a history of Gibson amplifiers through 2008; an overview of the development of amplification in the early 20th century; a complete guide to Gibson amps with specs, shipping totals, and pictures; and a 16-page color section. If that's not thorough enough, also included is a CD-ROM containing the entire Gibson Amplifier Master Service Book in PDF format, with ownerÂ's manuals and schematics for Gibson amps produced from 1936 to 1966. The information contained in this book and CD-ROM is simply not available from any other single source!