The Cusick, WA Siwash Indians baseball team!
There was a baseball team in northeastern Washington state’s post-frontier era named the Siwash Indians.
Locals in a backwater area such as this (sorry!) would’ve still known enough Chinook Jargon to recognize the meaning, even without the redundant “Indians”.
— from the Newport (WA) Miner of July 9, 1908, page 4, column 1
So, were the players Kalispel tribal folks?
Quoting a rather solid Wikipedia article: “Cusick (Salish: čmq̓ʷoqnú) is a town in Pend Oreille County…[and] is the headquarters of the federally recognized Kalispel Indian Community of the Kalispel Reservation.”
The following clipping seems indicative:
…Cusick had a Siwash Indian catcher and a large number of dusky braves, squaws and papooses from across the river watched the game…
— from the Newport (WA) Miner of June 11, 1908, page 1, column 6
What do you think?