Boston Harbor Islands Partnership - Extensive information from this a consortium of federal, state, city, and private agencies overseeing the 30-island park. Includes visitor guide and learning center. - http://www.bostonislands.org/
Boston Harbor Islands National Recreation Area - Includes 30 islands situated within the Greater Boston shoreline. Info on facilities, activities, fees, permits and points of departure for ferries is provided. - http://www.nps.gov/boha/