Hi, I have in my hand the Topo guide (ref 6552) for the Paris route via Tours. I have yet to study it in great detail (a friend and I are tentatively walking this path in 2010 to mark our special birthdays) but the copy I have here only goes from Tours, Poitiers, Saintes, Mirambeau. I also have the 2006 edition of the book "Le Chemin de paris et de Tours" Jean-Yves Gregoire - Jaqueline Veron (Rando editions). This book takes you from Paris, Etamps, Orleans, Tours and then down to Bordeaux and on to Bayonne, where it stops. This book then joins up with the another which follows the Camino del Norte. However, there is another book (which I don't have) showing a path from Bayonne to St Jean I think (or there is a Topo guide from Irun to St Jean going through the lower Pyrennnees).
The Topo guides have much better maps, but obviously it is only part of the path. I used the equivalent Rando guide from Le Puy, and despite the fact that it was the latest edition there were a lot of things out of date / incorrect in it. I used the maps only, which are a strip map style, but much more info than the Raju Cicerone Guide, but not as much as the relevant Topo guides.
I also own a book by a NSW woman who walked from Paris. This book is a little old now, and it is written in a "I did this, then I did that" style, with little lists of what and where she stayed, ate etc. It is out on loan at present, but will try and get the name and contact details of the woman concerned and PM you with it. I rang her and quite a chat last year.
Hope that is of some help. Janet