1899 Mount Rainier National Park established. 1900 Frederick Weyerhaeuser sets up a logging business in western Washington. Reclamation Service begins irrigation project in Yakima and Okanogan valleys to facilitate farming. 1903 Iron Chink fish cleaning machine invented by Seattleite Edmund A. Smith. Mount Olympus National Monument established.
Women gain the right to vote in Washington.
Spruce Army originated. 1929 U.S. stock market crashes. Hoovervilles appear in many cities, glaring evidence of high unemployment rates. Bonneville Dam on the Columbia River completed. Pearl Harbor, Hawaii bombed by Japan.