European and indigenous artifacts from a grave near a mound on Pine Island in the Tennessee River near Guntersville, Alabama, donated to the Yale Peabody Museum of Natural History in 1915, included a group of fabric fragments. The fragments, which incorporate interlaced bison-hair yarns, most likely represent portions of a sash, an accessory with a long history in Mississippian iconography but with few extant archaeological examples. This paper addresses fabric attributes, comparable archaeological and historical fabrics, and the social significance of this costume item.