Note 206 — JOURNAL OF TRAVELS OVER THE ROCKY MOUNTAINS (continued 4)

For the Blue Mountains see our volume xxi, p. 273, note 71. The stream was probably Touchet River, the largest affluent of the Walla Walla. Rising in the Blue Mountains in Columbia County, Washington, it flows northwest to Dayton, then turns southwest and south, debouching into the Walla Walla at the present town of Touchet.—Ed.