Though few of us now live close to the soil, the world we inhabit has been sculpted by our long national saga of settlement. At the heart of our identity lies the notion of the family farm, as shaped by European history and reshaped by the vast opportunities of the continent. It lies at the heart of Jane Brox's personal story, too: she is the daughter of immigrant New England farmers whose way of life she memorialized in her first two books but has...