Not motorcycle related - actually mostly devoid of motorcycle content, but I got a book on Honda - 'Honda Motor, The Men, The Management, The Machines' by Tetsuo Sakiya. Published in 1982. Both this book and another, 'The Honda Myth', that I'm reading barely mention the CB750. Honda was already the largest motorcycle manufacturer in the world and very focused on breaking into the car market by the late 1960's.