This Day in History

Cornerstone of Jefferson Memorial Is Laid (1939)
The construction of the Jefferson Memorial on the Tidal Basin in Washington, DC, was authorized by Congress in 1934. In 1939, US President Franklin Roosevelt presided over a ceremony during which the cornerstone of the monument was laid. Completed and dedicated in 1943, the white marble building, designed by John Russell Pope, is a circular structure with a domed ceiling, surrounded by 26 columns. Inside is a bronze statue of Jefferson. Why was a temporary plaster statue initially erected there? Discuss

The Apalachin Meeting (1957)
The Apalachin Meeting was a summit of some 100 Mafiosi from the US, Canada, and Italy that was raided after their fancy cars and out-of-state license plates aroused the suspicions of law enforcement agents in Apalachin, New York. Fifty-eight Mafiosi, including bosses Carlo Gambino and Vito Genovese, were detained. Perhaps the most significant consequence of the raid was that it confirmed the American Mafia's existence, a fact that had long been denied by what prominent law enforcement official?

Two Libyans Indicted for Pan Am 103 Attack (1991)
In 1991, after a three-year investigation, US and UK authorities announced indictments against two Libyan intelligence officials in connection with the 1988 bombing of Pan Am Flight 103 over Lockerbie, Scotland, which killed 270 people. During a trial held a decade later in the Netherlands, one of the defendants was found guilty and sentenced to life imprisonment. Whose presence on board the airplane has given rise to a number of conspiracy theories about the motivations behind the bombing?