JUST another 40' boxcar...however, it's kinda unique. It was one of two purchased from the Milw. d. I built mine from a M 40' &O boxcar. I added the ribs with .012 brass rod, asdded a wider door and the lumber door to the 'b' end. Could not find a yellow 'the Western Way ' decal.
Nice! I built a similar car. MicroScale 60-871 (which I'm assuming is where you got the decals for the car) has the 'Western Way' slogan in yellow.
I have something similar from Fox Valley. WP purchased some 40' boxcars from the Milwaukee Road. I think only three or four.