Chains carved from a single block of wood, cages whittled with wooden balls rattling inside -- all "made with just a pocketknife" -- are among our most enduring folk designs. Who makes them and why? what is their history? what do they mean for their makers, for their viewers, for our society? Simon J. Bronner portrays four wood carvers in southern Indiana, men who had been transplanted from the rural landscapes of their youth to industrial towns...