Hart-Miller Island State Park
- Located in the Baltimore County waters of the Chesapeake Bay near the mouth of Middle River and is accessible only by boat.
- http://www.dnr.state.md.us/publiclands/central/hartmiller.html

North County Preservation, Inc
- Dedicated to the preservation and protection of the ecologically and historically significant landscapes and structures of the northern part of Baltimore County. History, issues and events.
- http://northcountypreservation.org