Spatial Coverage
- Glen Canyon National Recreation Area (Utah and Ariz.)1
- Glen Canyon National Recreation Area.1
- Glen Canyon.1
- Great Falls Park1
- Great Falls of the Potomac (Md. and Va.)1
- Great Lakes (North America)1
- Guayaquil (Ecuador)1
- Guayaquil.1
- Haleakala1
- Haleakala (Hawaii)1
- Haleakala National Park1
- Haleakala National Park (Hawaii)1
- Harpers Ferry National Historical Park1
- Hualapai Indian Reservation1
- Hualapai Indian Reservation.1
- Hubbard Brook Experimental Forest1
- Hubbard Brook Experimental Forest (N.H.)1
- Hudson River (N.Y. and N.J.)1
- Indonesia1
- Inyo County1
