2 entries match your criteria. Related Historical MarkersFort Logan Montana (1869-1880) By Cosmos Mariner, August 10, 2015 The Smith River Valley Marker (wide view from highway pull-out) SHOWN IN SOURCE-SPECIFIED ORDER1► Montana (Meagher County), White Sulphur Springs — The Smith River Valley — On US Highway 89 (U.S. 12) 7.5 miles south of Main Street (State Highway 360), on the right when traveling south. 2► Montana (Meagher County), White Sulphur Springs — Fort Logan — On U.S. 89 at Chilton Street, on the right when traveling north on U.S. 89.