When Margaret Williamson left her family's rural Wisconsin farm to work in Minneapolis in 1923, her mother, Olava, wrote regularly with updates about daily activities: laundry, bread baking, plowing, planting, and harvesting the crops. Sometimes she enclosed a note from seven- year- old Helen, who reported on school and shenanigans and how she longed to see Margaret again.<br /><br />So begins decades of stories about a family at once singular— with personal joys...