www.woad.org.uk -Teresinha Roberts's site from UK, with good descriptions of extracting the woad pigment and dyeing with the leaves. Teresinha's unique work with natural dyes and hand made paper is beautiful.
reciprocal links welcome
Acknowledgements:
I have benefited from personal correspondence, phone calls, emails,
gifts of Isatis tinctoria seeds, and
dye samples, from the following natural dyers:
Dr. Karen Diadick
Casselman, of
Charllotte Kwon of Maiwa Handprints, and Maiwa Productions,
Teresinha Roberts, of
Michelle Jack, of
Ellen Kjellmo, of
I am indebted to Jan and Trudy van Stralen and Louet North America,
Thank you to Mona Boucher of
Thank you, to Dr. Bob Corbeil, Emeritus Professor of Math and Computer Science
I would like to
thank my family at Joybilee Farm for their support, encouragement, and yarn. My Great Grand Uncle, 
Dr. Alexander Crum Brown of U of Edinborough
for his example of the use of woad in science in the model 
of NaCl using woad
and madder dyed, felted wool balls and double pointed knitting needles. And for
his theorizing on methods of notating molecular structure using lines and balls
(On the Theory of Chemical Combination,1861), modern chemistry is indebted.
Website credits: Thank you to my mom, Christine Dalziel, for setting up the templates on this website. Writing is the work and copyright of Sarah Dalziel; Photographs are the work and copyright of Sarah Dalziel except where Sarah is in the picture -- those photographs were taken by Christine Dalziel.
This work has been funded by the generous people who purchased my Isatis tinctoria seeds and my woad dyed scarves and shawls. Thank you.