I found the ranch in this episode, the ranch actually belongs to Tom Selleck and is located on Potrero Rd in Hidden Valley behind Lake Sherwood. If you have a copy of the episode, (it's on Netflix). At the beginning, right after Elliott (Patrick O'neil) kills Williamson (Forrest Tucker, he drives to a front gate, then into the property, there you see the ranch house. Go to google earth and you can find it there....Happy location hunting!!!