Paul Galvin and his brother Joseph founded Motorola as the “Galvin Manufacturing Co.” in Chicago, Illinois.
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The first Dairy Queen restaurant opened in Joliet, Illinois, US.
Great Chicago Fire begins.
The world's most infamous clown, John Wayne Gacy, went on trial after he murdered 33 young men in Cook County, Illinois.
The Cherry Mine disaster in Illinois killed 259 miners in a coal mine fire.
Coopers Inc. started selling the world's first men's briefs in Chicago.
