The French Ramblers publish excellent guide books with mapping
http://www.ffrandonnee.fr/
The Topoguides are in the boutique section.

dash4it.co.uk now sell IGN 1:25000 maps quite cheaply.

Have a great trip,
Stewart

I am planning an autumn walk accross France. Starting in either Le Harve or Dieppe, accross to Dijon and then follow the Rhone down to the south coast.
I an having difficulty finding any maps or guides that cover France apart from a couple of E routes. Does anyone have any info or knowledge of where to access publications?
Many thanks
Mike Rouse