Abstract SE¼, Sec.3, T.22N., R.3W., Hatfield 7½-minute Topographic Quadrangle.Outcrop along the Black River below the eastern half of Arbutus Dam (Fig. 1). Approach is on a 0.2-mi-long (0.3 km) gravel road that intersects Clay School Road 0.1 mi (0.2 km) west of the Green Bay and Western Railroad tracks.Additional outcrop occurs for 0.6 mi (1 km) downstream from dam.

Abstract The quarry at Hamilton Mound is in the NE¼, Sec.36, T.-20N., R.6E., Coloma NW 7½-minute Quadrangle. It can be reached by turning east from Wisconsin 13 on Archer Drive, just north of Dorro Couche Lake, and proceeding about 4 mi (6 km) to a turnoff leading south into the quarry in the middle of Hamilton Mound.The turnoff from Wisconsin 13 is about 15 mi (24 km) south of Wisconsin Rapids (Fig.1).

Abstract The exposure is on the east side of U.S. 12, 0.3 mi (0.5 km) south of the junction with Wisconsin 159, SW¼, NW¼, Sec. 15, T.–11N., R.6E., North Freedom 7½-minute Quadrangle (Fig. 1). Caution: Traffic on U.S.12 is heavy, and there is a blind curve just north of the outcrop.