Oklahoma Shield Question

[CanesFan27]

On my flickr page, I received a comment asking what the sign on the bottom of this assembly is for.


IMG_5042 by Adam's Journey, on Flickr

I assume it is some kind of scenic route designation.

Thanks!

[rte66man]

http://blogoklahoma.us/places_sets.asp?id=5

rte66man

[CanesFan27]

Thanks!