- Lyons, C. J.1
- MBC Applied Environmental Sciences1
- Maine. Department of Marine Resources1
- Mainichi Shinbunsha1
- Makhaev, Mikhail Ivanovich, 1718-17701
- Maldonado, Sergio1
- Mapcon Mapping1
- Maples, Stace D.1
- Marin County Department of Public Works.1
- Marin Map 1
- MarinMap, Marin Telecommunications Agency1
- Marine Protected Areas Monitoring Enterprise1
- Martin de Moussy, V. (Victor), 1810-18691
- Massachusetts Coastal Zone Management Office1
- Matthews-Northrup Co.1
- Medeiros, David1
- Mendez Sylva, Rodrigo1
- Mentelle, E. (Edme), 1730-18151
- Merrick Company Project Number 500137341
- Michelle Thompson1
