1. In 1919, the state of Washington ratified the 19th Amendment to the U.S. Constitution, granting women the right to vote. Washington was the fifth state to ratify the amendment, which was officially adopted by the U.S. in August of that year.

2. On June 9, 1934, the first push-button telephone service in the world was introduced in Spokane, Washington. The system allowed customers to dial their own calls using a set of push buttons, rather than having to go through an operator.

3. In 1954, famous singer and civil rights activist Paul Robeson performed a concert in Tacoma, Washington. The concert was part of Robeson's "Peace Arch Concerts," which aimed to promote international understanding and peace.

4. On June 9, 1961, the first-ever Boeing 727 aircraft made its maiden flight from Renton Municipal Airport in Washington. The plane went on to become a hugely successful commercial airliner, with more than 1,800 produced over the next 40 years.

5. In 2017, Seattle Mayor Ed Murray announced that the city would officially recognize June 9 as "Orlando Pulse Remembrance Day," in honor of the victims of the tragic shooting at the Pulse nightclub in Orlando, Florida, on June 12, 2016. The day is meant to encourage unity and promote love and acceptance for all people.