“…During this long era of slow cultural change and adaptation to regional ecology, other modes of raw material acquisition likely became prevalent, such as reciprocity, where groups exchange materials, often at the boundaries of their territories. Eventually down‐the‐line trade may have emerged (Brose, 1994; Renfrew & Bahn, 2016), which is an extension of reciprocity, but involves a more directional movement of a given raw material away from the source. In either exchange mechanism, reciprocity or down‐the‐line trade, the groups closest to the Upper Mercer outcrop, like those at the Welling site, would have had better knowledge of the extent of toolstone variability relative to northern Ohio people, and thus could have exerted some form of control over the access to the material, keeping the highest‐quality rock for themselves and trading lower‐quality varieties away.…”