My grandfather Arthur Hamilton was a friend of Charlie Maslow, the one who discovered and pulled up the "Skookum" from off it's side. My grandfather made and placed these signs along the Fire Service road heading out to the "Skookum" to allow drivers to get to the work site. This is the only known survivor of these helpful signs.
This was in the mid 60's when this was going on. For those that don't know, the Skookum is the only 2-4-4-2 in the U.S.A and is one of only two in the world.
*The more you know!*