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Here’s a look back at what happened in the Chicago area on Dec. 11, according to the Tribune’s archives.

Is an important event missing from this date? Email us .

Weather records (from the National Weather Service, Chicago )

High temperature: 61 degrees (1949)

Low temperature: Minus 5 degrees (1972)

Precipitation: 1.73 inches (1949)

Snowfall: 9.5 inches (2000)

1921: Three days before he was scheduled to be hanged, “Terrible” Tommy O’Connor and two other prisoners escaped from jail in Chicago and were never seen again .

1945: Henrietta Bradberry earned her second U.S. patent — for a torpedo discharge means .

While her husband William was at work, the Kentucky native brainstormed ideas for useful devices in thei

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