This is interesting: The first sign, with the title "Overview," is located on the Old California Trail in the Eastern Sierra front range of California just spitting distance from the Nevada State line. The second sign titled "Old North Trail" is located in the Eastern Rockies front range of Northern Montana west of the town of Choteau. I find the two signs remarkable similar. Thoughts?
(Note: The Montana sign is historically inaccurate with regard to human migration.)