1. In 1933, notorious gangster Bonnie Parker of the criminal duo Bonnie and Clyde was arrested in Denison, Iowa after a shootout with police.
2. On May 12, 1984, the Iowa State Cyclones baseball team made history by winning their first Big Eight Conference title.
3. The historic Iowa State Capitol building in Des Moines was dedicated on May 12, 1884, after four years of construction.
4. May 12, 1870, marks the first day of classes at the University of Iowa, which is the oldest public university in the state.
5. In 1968, a tornado outbreak occurred in Iowa, including an F5 tornado that devastated the town of Charles City and killed 13 people. The outbreak resulted in 18 total tornadoes and is considered one of the deadliest in Iowa history.
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