📖 Terrell History Snapshot: Porter Farms (1982) Porter Farm near Terrell, known as the birthplace of the Texas Agricultural Extension Service, was the focus of a notable visit in 1982 when Agriculture Commissioner Reagan Brown honored three third-generation African American workers—all related and descendants of formerly enslaved people. Though they did not own the land, they spent their lives working it, helping build the farm, the county, and the state. Shortly after the ceremony, one honoree