The last two posts have been about Boro textiles. I have since found a website from the UK about sashiko which is very good. www.sashiko.org.uk/publications.php
The catalogue for the exhibition of Boro I found (by accident) in Tokyo is available to order from Gallery Tsumugi http://www.trocadero.com/haruko/catalog.html Thanks to Donna Watson for her advice on this.
I've been having a go myself at Sashiko, and here are the results. Very traditional at the moment but liable to change at any time!