Here are a few links that you might find interesting:
http://www.aladfi.com/ the French luthier’s association ALADFI
http://www.luthiers-de-france.fr/ is a site that lists a number of luthiers working in France, plus info about lutherie as a profession. Only in French.
https://www.violinbooks.com/index.php a fantastic series of books on Stradivari instruments, with full scale pictures of highest quality, measurements and other documentation.
http://www.destinationsuddefrance.com/ Great info about my beautiful region. In several languages.
International directory of violin shops A directory of hundreds of violin shops worldwide