Place
- Highway Department causeway south of St. Ignace (later to become north approach of Mackinac Bridge)1
- Isle Royale. Siskiwit Lake.1
- Kane1
- Kittery, Kittery Point1
- Ledges near Springfield, Ohio1
- Mackinac1
- Madison1
- Maine1
- Manati1
- Maryland1
- Mayaguez1
- Near Conway1
- Near Palo Verde beach1
- Near Urbana1
- North Dakota1
- Old fields NE of Crooked Lake1
- Olga, Puget Sound Islands1
- Peebles1
- Pembina Mountain, close to North Dakota - Manitoba boundary1
- Pennington1