Thanks to Matthew for giving me the correct spelling. That has enabled me to find a fascinating articles on jig dolls including a lot on Rennie & pat by Chris Brady at http://chrisbrady.itgo.com/jigdolls/jigdolls.htm and on the EATMT site at http://www.eatmt.org.uk/jigdolls.htm where you can also buy Rennie & Pat's book.