1. Washington Statehood Anniversary: May 14 marks the anniversary of Washington state's admission to the Union in 1889. At that time, it became the 42nd state in the United States.

2. First Seattle Waterfront Reopened: On May 14, 1971, the first Seattle waterfront was reopened to the public after being closed for several years due to the construction of the Alaskan Way Viaduct.

3. First Boeing 727 Flight: The first test flight of the Boeing 727 took place on May 14, 1963, at Boeing Field in Seattle. The 727 was a popular commercial airliner that was used by many airlines until the mid-2000s.

4. First May Day March: On May 14, 2000, the first May Day march was organized by immigrant advocacy groups in Seattle. Since then, the May Day march has become an annual event in the city and has grown to include a wide range of social justice issues.

5. Seattle Chinatown-International District Street Fair: The Seattle Chinatown-International District Street Fair is an annual event that takes place on the second Sunday of every August. However, the planning for the street fair begins on May 14, which is when the community meets to start organizing the event. The street fair has been a tradition since 1974 and is a celebration of the diversity of Seattle's Asian American community.