In 1793, John Ludlow settled and built mills along Mill Creek in a hilly, forested area 10 miles north of Fort Washington, Cincinnati, and the Ohio River. The Ludlows survived Indian raids and military incursions, and when the family later sold their land to William Cooper Procter and James Gamble, Ludlow Grove became Ivorydale, where industrial innovation and ingenuity fostered the development of global products that changed the world. The adjacent...