Peter Salus has given me books over the years (his shelf overfloweth), so when I was thinning my bookshelves, I sent him a note asking whether he'd like some of the stuff I was tossing. Instead, he sent me a MS he's working on, The Daemon, the GNU, & the Penguin. If I were Tux, I'd rather be the lion than the wardrobe, but your mileage may vary.
Most of the chapters are dry, but that's okay. There are no flashing ideas in a table of integrals, either, and a table of integrals is quite useful. The book is a brief but solid history of the early developments that led to Linux. Someone needs to get that stuff down accurately, and Peter's the someone to do it.