1. The first recorded performance of the song "America the Beautiful" was on September 5, 1901, at the Greenleaf Mansion in Wellesley Hills, Massachusetts, by Katharine Lee Bates, a New Hampshire native.
2. On September 5, 1916, the Mount Washington Cog Railway set a record for the steepest incline achieved by a passenger railway, reaching a maximum grade of 37.41%.
3. In 1971, on September 5, the New Hampshire State House was added to the National Register of Historic Places. It was built between 1816 and 1819 and is one of the oldest state capitol buildings in the United States still in use.
4. September 5, 2005, saw the official opening of the new Northeast Delta Dental Stadium in Manchester, New Hampshire. It is home to the New Hampshire Fisher Cats, a minor league baseball team.
5. On September 5, 2011, Tropical Storm Lee caused severe flooding throughout New Hampshire. Over 100 roads were closed and several towns and cities declared a state of emergency.