Spatial Coverage
- Arapahoe County1
- Arapahoe County (Colo.)1
- Arizona1
- California National Historic Trail1
- California National Historic Trail.1
- Castle Peak Region (Eagle County)1
- Castle Peak Region (Eagle County, Colo.)1
- Catoctin Mountain Park1
- Catoctin Mountain Park (Md.)1
- Catron County (N.M.)1
- Catskill Forest Preserve (N.Y.)1
- Catskill Mountains1
- Catskill Mountains (N.Y.)1
- Colorado, North Central1
- Continental Divide National Scenic Trail1
- Continental Divide National Scenic Trail.1
- Copper River Region1
- Copper River Region (Alaska)1
- Cuyahoga Valley National Park1
- Cuyahoga Valley National Park (Ohio)1
