The author of the short guide book says he knew Lewis and Lewis’ step-sons. There are some family memories, but the bulk of the book is a guide. I do not know how accurate the guide information is, but there are plenty of maps. Additionally, websites for more information (like hours) about places is included. There is information about the cheapest and easiest way to get around as well as traffic patterns. It seems pretty complete. Worth a read for an Inklings fan. Includes biographies at the end.
(picked up when offer free for kindle)