The Continental Congress convened for an official session in Lancaster’s County Courthouse, marking the one and only day the city held the title of the capital of the United States.

Opening with the famous line ‘Four score and seven years ago,’ Lincoln made the 2-minute speech to an assembled crowd of approximately 15,000 people including six separate state governors.

The incident at Three Mile Island heralded a dramatic shift in public attitudes towards nuclear power and the second reactor never returned to service.