- DRUMMOND ISLAND, northeast side of head of Warner's Cove, near center sec. 18, T41N, R6E.3
- Grand Detour3
- Near Vermilion.3
- On the Chase S. Osborn Preserve, near the southern end of Sugar Island.3
- Sault Ste. Marie3
- at Emerson3
- ca. 14 miles east of Cedarville.3
- near Eckerman,3
- near Vermilian3
- Chase S. Osborn Preserve of the University of Michigan, near the southern end of Sugar Island2
- Chase S. Osborn Preserve of the University of Michigan, near the southern end of Sugar Island,2
- DRUMMOND ISLAND, near NW end of bridge to Meade Island.2
- Drummond Is. at the S.W. corner of Maxton and Townline Rd's ca. 1/4 mi. E. of village of Drummond. Drummond Twp. T42N, R5E, Sec. 24 SE1/42
- Drummond Is., Maxton Plains.2
- Drummond Island at the Drummond Island Motel on Potagannissing Bay on N. side of Drummond Island. Drummond Twp. T42N, R6E, Sec.18, NE1/42
- Drummond Island, Maxton Plains2
- Drummond Island, s.e. corner, R7E, T41N, Sections 26-272
- Drummond Island, southeast side, near False Detour Passage.2
- Drummond Island. Maxton Plains.2
- Drummond Island. Southeast side, near False Detour Passage.2