Edited by Minnesota Scientific and Natural Areas, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Zack Harris, some rights reserved (CC BY-NC), uploaded by Zack Harris
- 2. (c) C. Mallory, some rights reserved (CC BY-NC), uploaded by C. Mallory
- 3. (c) Anita, some rights reserved (CC BY-NC)
- 4. (c) Earl McGehee, some rights reserved (CC BY-NC-ND)
- 5. (c) Doug McGrady, some rights reserved (CC BY)
- 6. (c) James Gaither, some rights reserved (CC BY-NC-ND)
- 7. (c) Jason Hollinger, some rights reserved (CC BY)
- 8. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
- 9. (c) Leo Papandreou, some rights reserved (CC BY-NC-SA)
- 10. (c) Jeff Chapman, some rights reserved (CC BY-NC), uploaded by Jeff Chapman
- 11. (c) Jörg Hempel, some rights reserved (CC BY-SA)
- 12. (c) Superior National Forest, some rights reserved (CC BY)
- 13. (c) Kerry Woods, some rights reserved (CC BY-NC-ND)
- 14. (c) Hermann Falkner, some rights reserved (CC BY-NC)
- 15. (c) Joshua Mayer, some rights reserved (CC BY-SA)
- 16. (c) Anita Gould, some rights reserved (CC BY-NC), uploaded by Anita Gould