The Real McCoys (1957)

S1E6 You Can't Cheat an Honest Man

Title: An Honest Man’s Luck Plot: Grampa believes he’s struck a great deal by selling off some worthless farmland, only to discover that a new freeway is being constructed right through it. Luke and Kate are convinced that Grampa has been taken advantage of, but his genuine nature ultimately turns the situation in the McCoys' favor.