1. The city of Indianapolis was founded on April 3, 1820, when the Indiana General Assembly authorized a site for a new state capital. The site was chosen because it was located at the geographic center of the state.

2. On April 3, 1885, Indiana-native Eugene V. Debs organized the first industrial union in the United States, the American Railway Union. The organization was dedicated to the improvement of the working conditions of railway workers and led several successful strikes.

3. April 3, 1905, marks the birth of Indiana-born novelist and essayist Mary McCarthy. McCarthy wrote several influential works of fiction and non-fiction, including her memoir "Memories of a Catholic Girlhood" and her novel "The Group."

4. John Dillinger, the notorious bank robber and Indiana native, was arrested by the FBI on April 3, 1934, in Tucson, Arizona. Dillinger had become one of the most wanted men in America after a string of robberies and murders.

5. Indiana University basketball coach Bob Knight won his third National Championship on April 3, 1987, when his team defeated Syracuse in the NCAA Tournament final. Knight is one of the most successful college basketball coaches of all time, with 902 career wins and three National Championships.