Ellen L SweetHistoric Stage Routes of San Diego County is a product of the County of San Diego Department of Parks and Recreation and their Parks Society, many generous historical societies, historians, and people who love the stage routes. Ellen L. Sweet is a loal researcher with extensive knowledge of San Diego history. Lynne Newell, PhD, is an archaeologist and the former county historian. They are also the authors of Ranchos of San Diego County. Read More Read Less