Spatial Coverage
- Maxwell Land Grant (N.M. and Colo.)1
- Mexico.1
- Middle West1
- Minnesota1
- Minnesota.1
- Narragansett Bay (R.I.)1
- New Jersey.1
- New York (State)1
- New York Harbor (N.Y. and N.J.)1
- North America1
- North Carolina1
- North Pacific Ocean1
- Oregon1
- Örebro län1
- Pacific Coast (B.C.)1
- Pacific Coast (Or.)1
- Pacific Coast (Wash.)1
- Pennsylvania1
- Pennsylvania.1
- Peru1
