Once the colonial era began around 1500 or 1600, Europeans and Native Americans started trading. As far as I'm aware, the principal trade was beaver pelts in exchange for iron axes.
But I'm interested in trade amongst the Native Americans themselves, before the colonial era. Did any trade go on? If so, what was it? It seems like each tribe could make whatever it wanted from the materials nearby, so I am very interested in the trade situation or lack thereof.
Note, I'm also aware of some Icelanders coming to Canada around the year 1000. Not really interested in that either, as far as this question is concerned. Only care about tribe-to-tribe trade of Native Americans.