1. In 1901, President William McKinley died from an assassin's gunshot wounds sustained in Buffalo, New York on September 6. The death elevated Vice President Theodore Roosevelt to the presidency, making him the youngest ever to hold the office at 42 years old.

2. September 14, 1962, marked the opening of the Century 21 Exposition, also known as the Seattle World's Fair, in Seattle, Washington. The event drew over 10 million visitors and featured exhibits on science, technology, and the arts, as well as the iconic Space Needle.

3. On September 14, 1982, African-American women in Washington state formed the "Sisters in Solidarity" group to advocate for black women's rights and address issues such as domestic violence and low-wage work. The organization supported other social justice movements, such as the fight against apartheid in South Africa.

4. In 2003, the Seattle Mariners baseball team set a record for most wins in a single season by an American League team with 116 victories. The team's success was led by standout players such as Ichiro Suzuki and Bret Boone.

5. On September 14, 2018, a northern Pacific humpback whale was found dead on the shores of Washington's Olympic Peninsula. The whale, estimated to be around 9 years old, had likely died from being entangled in fishing gear. The incident highlighted the ongoing threat that human activities pose to marine life.