1. On June 8, 1861, the first regiment of Kansas Volunteer Infantry was mustered into service for the Union Army during the Civil War. The regiment played a significant role in various battles, including the Battle of Wilson's Creek and the Battle of Pea Ridge.

2. In 1938, the iconic Kansas City Art Deco building, the Municipal Auditorium, was opened on June 8. The venue has hosted numerous events over the years, including political conventions, concerts, and sporting events.

3. On June 8, 1959, the deadliest tornado in Kansas history occurred in the El Dorado and Udall areas. The tornado claimed 80 lives and caused extensive damage, with winds estimated at over 200 miles per hour.

4. In 1974, the Kansas City Royals selected outfielder Willie Wilson with the fourth overall pick in the Major League Baseball draft on June 8. Wilson went on to have a successful career, earning two All-Star Game selections, a Gold Glove award, and leading the American League in stolen bases five times.

5. June 8, 2015 marked the opening of the National Bio- and Agro-Defense Facility in Manhattan, Kansas. The state-of-the-art facility focuses on researching and preventing potential bioterrorism threats and infectious diseases that could affect livestock and crops. It is a joint effort between the U.S. Department of Agriculture and Kansas State University.