I remember hiring this out from my local library around 10 years ago or so. I didn't really understand it then, but I believe it is reasonably revered!
It's better to have it & not need it, than to need it & not have it!
Agree with Milkit, that the Craig Anderton book is excellent. Quite dated now, quite a few hard to find components but it is written well. My favourite in the book is The Spluffer, a split Buffer where Craig says "This ainta glamour project and it wont make your axe sound like flying saucers!!!".
Also contains the schematic for the Tube sound fuzz (llama!).