Perhaps a bit of an outsider on this blog, but this 104-page book about Simmons Electronic Drums is in fact quite an interesting read.
The British Simmons company produced drum modules since the late seventies and is perhaps best known for their distinctive sounds and their 'hexapad' drum-surface design.
This book tells the whole story, their conception, development, and even their problems.
Allmost all their drumkits are included in this book, from their first SDS-3 (SDS series), ClapTraps and expanders up to models that were never released.
The book was written and published in 1987, seven years before Simmons produced their last products so only a few models are not mentioned in this book ( like the TurtleTrap and the SDS-2000 )
I have no idea why this book was written, but it looks like a nice thick brochure to sell Simmons products.
It is filled with (b/w) pictures, background stories and stories by players and is very well-written.
I recommend this if you are interested in (drum)-synthesizer history.
A good read from beginning to end.
Wise Publications ISBN: 0-7119-0933-4
Order No. AM 63173