"While unpacking boxes of old family books recently, Elizabeth Gilbert rediscovered a dusty, yellowed hardcover called At Home on the Range, originally written by her great-grandmother, Margaret Yardley Potter. Having only been peripherally aware of the volume, Gilbert dug in with some curiosity, and soon found that she had stumbled upon a book far ahead of its time. Part scholar and part crusader for a more open food conversation, Potter espoused...