I'm in Arizona right now for some family business. Met a couple from Minnesota who said they live "right in the middle of Ole- and Lena- land." My mother-in-law explained the reference: there's a bunch of jokes they tell in Minnesota about Ole and Lena, a fictional couple who immigrated to the US from Norway. And, she just happened to have two of these joke books!
Here's one of the jokes:
Little Ole was doing arithmetic. "Dad, can yew help me vit my aritmetic? I am looking fer da common denominator." --- "Vell, uff da!" grumbled Papa Ole. "Haven't dey found dat darned ting yet? Dey vere lookin' fer it vhen I vas a kid!"