Spatial Coverage
- Montana2
- New Hampshire2
- North Carolina2
- Norway2
- Oklahoma2
- Papineau2
- Rainy River (District)2
- Rhode Island2
- San Francisco (Calif.)2
- Similkameen River Valley (B.C. and Wash.)2
- South Carolina2
- Southwest, New2
- Tennessee2
- Washington (State)2
- West Indies2
- Willamette National Forest (Or.)2
- Winston-Salem (N.C.)2
- Wisconsin2
- Admiralty Island (Alaska)1
- Africa, East1
