1. On March 20, 1879, the Nebraska State Journal reported that the City Council of Lincoln had voted to adopt a plan for a city-wide system of waterworks. This was an important step in improving public health and sanitation within the city.

2. March 20, 1920, marked the dedication of the new state capitol building in Lincoln. The building, which is still in use today, is an iconic symbol of Nebraska's state government.

3. On March 20, 1933, Nebraska Governor Charles W. Bryan signed a bill legalizing the sale of 3.2% beer in the state. This was in response to the national repeal of Prohibition, and the move helped boost tax revenues and create jobs in the brewing industry.

4. March 20, 1969, saw the opening of the Strategic Air Command (SAC) Museum at Offutt Air Force Base near Omaha. The museum houses a collection of aircraft, missiles, and other artifacts related to the history of SAC, which played a key role in the Cold War.

5. On March 20, 1981, Nebraska Governor Charles Thone signed a declaration designating the state's official soil: Holdrege silt loam. This soil, which covers over 2 million acres in central and south-central Nebraska, is known for its fertility and suitability for agriculture.