Freeballer,

I don't have a source for flintnapping, but for other traditional skills (mostly woodworking stuff) consider these:

workwearcanada.com is Canadian owned and offers some traditional crooked knives, old school flint and steel etc. The owner is a real solid dude and has a very good rep with all those he deals with. Orders over 100 bucks ship free within Canada.

crazycrow.com is and American company selling mostly native type stuff (beads, feathers etc) but they do have an excellent selection of raw leather, horn and other things worth taking a look at if wanting to craft a few knife sheaths or the like.

I shoot traditional recurve but I couldn't imagine the skill needed to properly make one of any value. Good luck, that would be a huge accomplishment indeed.

Not exactly what you asked, but I hope it helps.