For about $1 million, you can get a taste of Lake Wobegon on the St. Croix River. Garrison Keillor has put his 11.5-acre riverfront property in Pierce County, Wis., up for sale. Complete with 460 feet of shoreline and clay tennis courts, the two-parcel property features four dwellings: a nearly 1,900-square-foot log home, a log guest home, a studio and a detached office. "It's in the woods - it feels like a hamlet," said Joyce Peterson, a Realtor with Coldwell Banker Burnet. The office, which, Peterson called "a writer's cottage," was where Keillor wrote the novel "Wobegon Boy," she said....