1. In 1950, the United States Air Force established a radar station in Cavalier, North Dakota. The station was part of the network of early warning systems designed to detect potential Soviet attacks during the Cold War.

2. On March 30, 1919, the North Dakota Legislature authorized the formation of the State Bank of North Dakota, which continues to operate today as the only state-owned bank in the United States.

3. In 1943, a group of German prisoners of war attempted to escape from a camp near Medora, North Dakota. The escape was quickly quelled by guards and no prisoners succeeded in getting away.

4. March 30, 1955 saw the first flight of a B-52 Stratofortress bomber from the Boeing facility in Wichita, Kansas. The B-52 was a key component of America's Cold War military strategy and many of the aircraft were stationed at Minot Air Force Base in North Dakota.

5. In 1972, the NCAA Division II Men's Basketball Championship was held in Bismarck, North Dakota. The championship game was won by Roanoke College of Virginia, who defeated Cheyney State of Pennsylvania by a score of 75-73.