The same goes for the Reno/Carson City area as well, presumably the same rationale as Clark County. To call some of these counties "rural" is an understatement - some are truly out in the middle of nowhere.

For those unfamiliar with the area, the closest brothels to Las Vegas are over the hill in Pahrump, which is about an hour west just over the Clark/Nye line. There wasn't even telephone service, much less a paved road to that area until the late 1960s. That would make the private plane landing at the brothel much more explainable.