Local source for pink curing salt?

I'm going to try to make pancetta and the recipes I've read, particularly "Charcuterie" by Ruhlman, use a "pink salt," a curing salt with nitrite, (not to be confused with naturally pink salts such as Murray River). I'm new to this meat-curing fascination, so does anyone know of a local source for pink salt? Has anyone ever attempted this? I'd love to hear about it.
Thanks.

Amy, they have this stuff listed in their catalog at Creation Gardens - might want to call first to make sure it's in stock. It's quite a bit less than $10/lb box. 587-9012