WASILLA, Alaska -- The valley where Sarah Palin was raised is vast and tree-packed, and so quiet that once, when Palin's parents left a door open in their antler-festooned house, a moose poked its nose into their den. You can't blame the moose for being curious. The wood-plank loft home of Chuck and Sally Heath is known for its odd, bristling lawn art. A towering sculpture of bleached antlers sits by the driveway. Bright buoys and fishing lures dangle from silver birch trees. But this riot of objects is merely a warm-up for the interior: Fox pelts. Orca teeth. Bear...