sentences:  The Whitman Mission catalyzed white settlement of the region, beginning in 1843 when 1,000 people, 120 wagons, and approximately 5,000 horses and cattle came to the Walla Walla valley.The initial settlers remained near the current city of Walla Walla and into the Touchet River valley.The Lamar Cabin, built in 1863 of hand-hewn cottonwood logs from the Touchet River valley by George Dudley Goodwin, became the home of the bachelor brothers James and Joseph Lamar in 1872 (women were rare in the valley and many men remained unmarried).