Typed letter written by Reverend Jason Lee to the Christian Advocate and Journal. Written in the Rocky Mountains on June 25, 1834 and published in the Christian Advocate and Journal on October 3, 1834. Letter is titled, "Flat Head Mission." Lee wrote this letter as he traveled on the Oregon Trail to become a missionary in Oregon. It summarizes his journey thus far, through the months of May and June, much of it along the Platte River. Subjects include Lee's observations of local native tribes, including the Pawnee and Nez Perce. Other subjects include the landscape, weather, and buffalo. [Lee originally intended to do missionary work among the Flathead Indian tribe, but the area where he eventually settled in the Willamette Valley, near present-day Salem, was home to bands of the Kalapuyan people. Lee used language common to justifying the nineteenth century missionary movement, including using disparaging and inaccurate terms and/or descriptions of Native peoples.]