1. In 1861, the Washington Territory was created, which encompassed present-day Washington, Idaho, and parts of Montana and Wyoming. This was done through the signing of the "Organic Act" by President James Buchanan.

2. In 1920, Seattle's first synagogue, the Temple De Hirsch Sinai, was dedicated on January 17. It was founded by a group of Jewish immigrants who had settled in the area.

3. In 1977, Seattle's iconic Space Needle was listed on the National Register of Historic Places. It was built for the 1962 World's Fair and has become a symbol of the city.

4. In 1983, former Washington governor and U.S. Senator Henry "Scoop" Jackson died on January 17. He was known for his strong anti-communist views and advocacy for the military.

5. In 1995, the Seattle Seahawks played in their first AFC Championship game on January 17, ultimately losing to the Pittsburgh Steelers. This was a significant moment for the team and its fans, as it represented their first appearance in a conference championship game.