@George,
Klondike 5 was the equivalent to today's fictional 555- telephone numbers in television shows and movies.
The word (never used it myself as that system was long gone before I was born) was given to the telephone operator/switch board operator in lieu of todays dialed area code.
And isn't a
running board some kind of side platform on trucks and cars. No longer exists today as I guess they don't want people to hitch rides on the outside of trucks and cars. Not exactly sure if that was the purpose or it was just to help people step up to get inside the back of the truck from the side, or a step to help people get into the cabin of the truck.