To perhaps limit the suggestions a bit; do you already have any books about Morgan?
A good starting point is, perhaps, the: "Morgan - First and last of the Real Sports Cars"; Gregory Houston Bowden. Another book, about the four-wheelers, is the "Morgan: The Last Survivor"; Chris Harvey. Or perhaps "Morgan 100 Years". By Charles Morgan and Gregory Houston Bowden. Then there are lots of other books of course.
