- Sec.9,10,15,16 T46N-R6W.ca.2 mi. NW Eckerman.1
- Sheldrake, Whitefish Bay of Lake Superior1
- Shelldrake River south of Vermillion.1
- Shore of Lake George, 1 1/2 mi NW of Homestead, Sugar Island1
- Shore of Lake Huron, west of DeTour3
- Shore, Lake Huron, west of DeTour2
- Shoulder of highway M-28. ca. 1.8 mi. SW of Hulbert Corners.1
- Soo Twp.1
- Soo Twp. T47N, R1E, Sec. 6 SE1/4 collected 1 block west of Ashmond in downtown area.1
- Soo Twp. T48N, R1E, Sec. 6 SE1/4; at the corner of Peck ad Fort streets on the power canal in downtown Sault St. Marie.1
- Soo Twp. Two blocks S. of the power canal on Ashmund street in Sault Ste Marie.1
- South of Emerson.1
- South of Vermillion, in Shelldrake River bottoms.1
- South side of Drummond Is., Warner's Cove,1
- South side of Drummond Island, back of Lake Huron beach at Warner's Cove (Sect.18, R6E, T41N)1
- South side of Drummond Island, near Warner's Cove (sec.18, R6E, T41N)1
- St. Mary's Falls1
- St. Mary's River by Drummond Island ferry dock in village of DeTour.1
- State Forest north of Dudley Bay. End of two-track raod running northwest from M-134 by Dudley.1
- Stump Lake.1