1. On December 6, 1865, the 13th Amendment to the United States Constitution was ratified by the necessary number of states, officially abolishing slavery throughout the country, including in Indiana.

2. In 1917, on December 6th, the first elevated train line in Indiana began service in Gary. The line was 2.6 miles long and provided transportation for workers from residential areas to industrial sites.

3. December 6, 1933, marked the end of prohibition in Indiana, with the repeal of the 18th Amendment to the U.S. Constitution. The sale of alcohol became legal once again in the state.

4. On December 6, 1941, the Indianapolis Board of Public Works approved a plan for the construction of a new airport to replace the existing municipal airport. The new airport, later named Indianapolis International Airport, opened in 1976.

5. In 1982, on December 6th, Tom Bradley became the first African American mayor elected to lead a major city in the United States outside the South. Bradley was born in Calvert, Texas, but grew up in Greenwood, Indiana.