Cyrus Walker was the oldest son of the early Oregon Territory missionaries Elkanah and Mary Richardson Walker. He grew up at Tshimakain in the 1830s-40s, where he learned the native Spokane language. After joining the U.S. army during the Civil War and then attempting to make a living as a farmer, he became a teacher at the Warm Springs Indian Agency. These letters, documents and clippings shed light on his experiences as a missionary, a soldier, a pioneer and a teacher at Warm Springs. This collection was donated to Pacific University by Betty Thorne, a descendant of the Walkers.