Here's an eqtraders link from October 2000 discussing a September patch that added cultural recipes:
http://web.archive.org/web/200010150....com/news.html
The Barbarian recipes page, from November 2000 (still pre-Velious):
http://web.archive.org/web/200011091...barbarian.html
The most likely patch notes (tradeskills discussed at bottom):
http://www.tski.co.jp/baldio/patch/20000919.html