When I heard that Haynes where going to publish this book I was excited. The book is an absorbing read and has the technical details that fascinate and make you think about how they overcame technical challenges using mostly slide rules, pencils and paper. The reviewers who poorly review it seem to be missing the bigger picture because this book is straight to the point and well taught out. Why split hairs over some technical innacuracy. I hope Haynes do more books on such technology because I will be interested.