Ridiculously excited for the book. Do you stick to the core years of 87-93, or does the history stretch earlier/later?

Thanks for your enthusiasm! The book begins in the early '80s with the Deep Six bands (U-Men, Melvins, Malfunkshun, Green River, Soundgarden and Skin Yard) and ends in the early aughts (or whatever your preferred term for that decade is).