Hi Annie,
I would be interested in ‘Medieval Pilgrimage’ on the basis you suggest; read and pass on for the postage.
I have a copy of ‘Le Chemin du Puy’, in French, by Jean-Pierre Sirejol & Louis Laborde-Balem. Paperback, 21 x 13.5cm. It describes and illustrates the route from Le Puy to SJPDP...