154 acres of former 3M Wonewok corporate retreat sell for $4 million

Billion Real Estate Holdings LLC of Sioux Falls, South Dakota, acquired 154.25 of 187.2 acres at 3M Wonewok, on Big Mantrap ...

South Dakota businessman Dave Billion buys 3M retreat in northern Minnesota for $4 million

The Wonewok Conference Center on Big Mantrap Lake, just north of Park Rapids, Minn., is a 180-foot-long, pine log lodge with ...