This is History: Wrigley Company Founded, Debut of TV in 1939, Harold Washington Becomes Mayor of Chicago, Oldsmobile Ceases Production

In this April 14, 1983 file photo, from left, Chicago Mayor Jane Byrne, mayor-elect Harold Washington, and Cook County State's Attorney, Richard M. Daley gather at a unity luncheon in Chicago. Byrne, Chicago's first and only female mayor, has died at the age of 80. Byrne’s daughter, Kathy, says her mother died Thursday, Nov. 13, 2014 at a hospice in Chicago. (AP Photo/Charlie Knoblock, File)

Michael, Kevin and Dave Schwan talk ‘This is History; including the launch of the Wrigley Company, TV is introduced at the Worlds Fair of 1939, Apple is founded, Harold Washington is Chicago’s 1st black Mayor to be sworn in, the last Oldsmobile.