There is a splendid book about the history of pc's: "Digital Retro" from Gordon Laing ([link]). It describes the developement of pc's from the MITS Altair 8800 till the NeXT Cube. And the Atom, the BBC Micro, Electron and the Archimedes are described in it as well. With lots of pictures and interesting backgrounds and stories.
I hope that Richards book will be as interesting. Although five years... I'm looking forward to it!