I received mine today and it certainly looks good! Only had a quick glance so far - will have to wait for the w/e to start reading. From a first glance, the first few chapters cover Fosberry and his various patents leading up to the paradox. The majority of the book looks at Holland & Holland and its paradox guns plus the odd snippet about bore rifles and paradox guns from other makers. Chapters on 12, 8, 10, 16, 20 and 28 bore paradox guns. Should be a good read!