Photo by Peter Thody
The Yellowstone Trail, America's most northerly transcontinental highway, was first conceived in 1912 (predating the Lincoln Highway by a year). While much of the original route has long since disappeared, the spur linking Livingston to Yellowstone National Park remains virtually unchanged.
If you go:
Tracing the route of Yellowstone River along its west bank, it can be accessed from a number of points along Highway 89 between Livingston and Gardiner, including here at Corwin Springs.
Book: "On the Road to Yellowstone: The Yellowstone Trail and American Highways 1900-1930" by Harold Meeks
Old Yellowstone Trail S
Corwin Springs, Montana USA