Hello David,
What a nice surprise to find you on this anglophone forum! This is Philippe Gindre from La Clef d'Argent (French small press publisher). You might be interested in visiting the small website I have started. It is entirely dedicated to Clark Ashton Smith. You'll find it at <
http://www.klarkash-ton.org>. For the moment it consists mainly in a French bibliography. If you find missing titles, please tell me!
Bests,
Phil