1. In 1920, Indiana native and future U.S. President, Dwight D. Eisenhower married Mamie Doud in Denver, Colorado. The couple had two children and remained married until Eisenhower's death in 1969.

2. On September 28, 1871, the first public library in Indiana opened in Evansville. The Willard Library was named after its founder, Louise Willard, and was built with funds donated by Willard and her husband.

3. Indiana University Bloomington was founded on September 28, 1820. The university has since become one of the largest and most respected public universities in the country, known for its research, athletics, and academic programs.

4. On September 28, 1928, the world's first fully automatic stoplight was installed in Indianapolis. The stoplight used mechanical timers and sensors to control traffic and was an important innovation in traffic safety.

5. In 2007, Indianapolis native and Indiana University graduate David Letterman received the 20th annual Mark Twain Prize for American Humor. The award is considered one of the highest honors in American comedy and has been given to comedic icons such as Richard Pryor, Carol Burnett, and Ellen DeGeneres.