Chinook Jargon in the news: Tumwater Historical Society
From JOLT (The Journal of Olympia, Lacey, and Tumwater), Friday, May 10, 2024, an article worth reading in full:

“Team of four struggles to save local historical society in Tumwater – help them!”
Including this:
This area within the official Oregon Territory was eventually incorporated into Washington Territory and, finally, Washington State. In 1845, the town was named New Market. It was founded by George Bush, a mixed-race man, co-leader of the Bush-Simmons Party who, with his wife Isabella, traveled by covered wagon from Missouri. By 1863, the name changed from New Market to Tumwater, a word derived from Chinook Jargon, meaning “waterfall.”
