The specific goods exchanged varied, but the core of the trade was the exchange of bison robes and beaver pelts for American manufactured goods — metal tools, firearms, ammunition, fabric, and various luxury goods that were increasingly integrated into plains economies.

The trading relationship created regular contact between Crow leaders and the Euro-American employees of the fur trade.

This contact was the mechanism through which people like Denig developed their understanding of Crow society — not through systematic ethnographic study, but through years of regular commercial and social interaction with people who became, in some cases, genuine acquaintances.

Woman Chief’s regular presence at Fort Union — she appears to have visited with some frequency, as major Crow leaders did — is what gave Denig his extended knowledge of her life and what created the specific encounter with Kurz in October 1851.

The trading post network was the context in which her story became partially accessible to the documentary record.