Yeah, a Midwestern might be a good way to describe LHotP. B) Michael Landon had spent all those years on Bonanza, after all. And there were some episodes that were flat-out Western in nature - complete with tin-pan pianos and saloon girls and poker and bad guys in black hats and everything else.
I see no one has mentioned that goofy series called "Wild Wild West" from the '60s with Robert Conrad. Not really a western, huh?