For those into medieval timber frames a book with the descriptive title "Regional Variation in Timber-Framed Building in England and Wales Down to 1550" is well worth buying. It has some great illustrations similar to those in "Discovering Timber Framed Buildings". The first edition came out in 1998 so it's not new. However I've never seen it mentioned in must-have timber frame book lists, so I thought I'd mention it.

Miles