In "Harker's Barns" documentary photographer Michael Harker captured the glory and the decay of one of rural America's most elemental icons. Now in "Harker's One-Room Schoolhouses "he brings another rural American icon back to life. His stark and stunning photographs of these small, neat buildings--once the social and educational center of rural life, now either abandoned or restored to an artificial quaintness--encapsulate the dramatic transformations that have overtaken the Iowa countryside.