Spatial Coverage
- Long Branch Region (N.J.)1
- Long Branch Region.1
- Long Branch.1
- Long Island1
- Lower Bay (N.Y. and N.J.)1
- Lower Bay.1
- Manhattan (New York, N.Y.)1
- Manhattan.1
- Mercer County v Maps.1
- Metedeconk River Watershed1
- Middle Atlantic States.1
- Middlesex County1
- Monmouth County (N.J.)1
- Monmouth County.1
- Monroe County1
- Montgomery County1
- Morris Canal (N.J.)1
- Morris Canal.1
- Morristown1
- Mullica River Watershed1
