Jumping about in time is going to happen, I'm just going to have to live with it. I ended up buying the following book (fantastic): Amazon.co.uk: Books: The Mandolin Manual: The Art, Craft and Science of the Mandolin and Mandola: "The Mandolin Manual: The Art, Craft and Science of the Mandolin and Mandola
John Troughton " Order Date: 17 Jul 2003
I tried to get one called Contructing a Bluegrass Mandolin by Roger Siminoff but Amazon cancelled my order.
So the fates ended up deciding what sort of mandolin I would make (of which more anon or maybe previously)