Place
- On south side of Middle Lake.1
- Ontario1
- Ontonagon1
- Ottawa National Forest; ca 15 air mi SW of L'Anse. Silver Mountain, an igneous dome.1
- Ouray1
- Paris1
- Philippines1
- Phoenix1
- Pictured Rocks, Lake Superior1
- Porcupine Mountains.1
- Rich swamp near Paw Paw.1
- Ringwood, Brant Twp1
- Saginaw1
- Schoolcraft1
- Sherlund property1
- Silver Creek Twp1
- Silver Creek, along1
- Sonoma1
- South Branch Flint River, near; Columbiaville, ca 3 mi SE of; Oregon Twp1
- South Manitou Island1