Subject
- Aerial Photograph (17)
- Botany Minnesota (17)
- Davidson, Donald M Jr (17)
- Geological Survey of Minnesota (17)
- Geological and Natural History Survey of Minnesota (17)
- Geology Minnesota (17)
- Phinney, William C. (17)
- Fall Lake Township (16)
- Geology (16)
- Boundary Waters Canoe Area Wilderness (6)
- Superior National Forest (4)
- Hudson Lake (3)
- Lake Insula (3)
- Fire Lake (2)
- Lake Four (2)
- Lake One (2)
- Lake Three (2)
- Survey (2)
- Becoosin Lake (1)
- Benezie Lake (1)