So, it seems that the bonus track, "Frontier City," from Only By The Night is indeed at least related to the actual Frontier City. I never went there, it always seemed like the poor man's Six Flags. However, I have driven past it quite a few times.
I also like how KoL have little odes to Oklahoma. I wish they would've at least made "Frontier City" a hidden track like they did their last Okie ode "Talahina Sky."