1. The Maryland State House was completed on November 13, 1779. This historic building has been the center of Maryland politics since the 18th century and is one of the oldest statehouses still in continuous legislative use in the United States.

2. On November 13, 1952, the Great Appalachian Storm swept through Maryland and much of the eastern United States, causing widespread damage and killing dozens of people. This storm was one of the most intense winter storms on record in the region and is still remembered as one of the worst natural disasters in Maryland history.

3. November 13, 1982, marked the opening of the Baltimore Metro Subway, Maryland's first rapid transit system. The subway currently has 14 stations and covers a distance of 15.5 miles, connecting the city of Baltimore with its suburbs.

4. The Baltimore Colts defeated the Atlanta Falcons 31-27 on November 13, 1977. This game at Memorial Stadium is memorable as it was the last game before the Colts moved to Indianapolis after the 1983 season.

5. On November 13, 2006, Maryland voters approved a referendum allowing slot machines in the state. This decision paved the way for the development of several casinos in Maryland, including the Hollywood Casino at Perryville, the first casino in the state, which opened in 2010.