“…Pre-contact social relationships stimulated by power and exchange could bridge linguistic divides and span large distances (Figure 9). Edziza obsidian moved among ancestors of the Salish, Tsimshian, Haida, Tlingit, and Dene (Brüchert, 2012; Carlson, 1994; Coupland, 1988; Hackett, 2017; Reimer, 2015; Springer et al., 2018). This strengthens and extends Townsend’s (1980) claim that linguistic affiliation in the Alaskan Rim exerted less influence on contact than economic interaction.…”