“…This work helped establish a solid reference database for Midwestern pipestones that can be used for future artifact sourcing. Many of our results have been published previously (e.g., Hughes et al, 1998;Hughes, 2000, 2001;Emerson et al, 2002Emerson et al, , 2003Emerson et al, , 2004Emerson et al, , 2005aWisseman et al, 2002Wisseman et al, , 2004Wisseman et al, , 2011. In this paper, we present how NIS (PIMA) works for sourcing pipestones, the dominant mineral composition of the major pipestone sources, and the current state of our knowledge on pipestone geology.…”