wooden wall

I was exploring an old town in Eastern Oregon and came across these homemade signs on the wall of an old building. I'm pretty sure the building was vacant, as was the building facing these signs. There are a lot of questions here and I'm sure there's a story behind whatever it was that compelled someone to make these. I originally identified this town as Condon, Oregon. I drove back through the area and it was actually Wasco, Oregon. Forgive me for mixing up these two major metropolises!