1. In 1856, the Sacking of Lawrence occurred in Kansas. This was a violent event during the Bleeding Kansas era, where pro-slavery forces attacked and destroyed the anti-slavery town of Lawrence.

2. On May 16, 1874, the first organized baseball game in Wichita took place between the Wichita Baseball Club and the Cowtown Club. This game marked the beginning of organized baseball in the state of Kansas.

3. In 1910, the University of Kansas held its first commencement ceremony in the newly-built Robinson Gymnasium in Lawrence. Over 600 students graduated that year, marking a significant moment in KU history.

4. May 16, 1931, saw the opening of the Topeka Zoo, which is now home to over 200 species of animals. The zoo has become a popular attraction in Kansas and is known for its conservation efforts.

5. In 1962, astronaut Walter Schirra visited Wichita on May 16 as part of a nationwide tour following his historic space flight. His visit was met with great fanfare and marked Wichita's involvement in the exciting era of space exploration.