Lorne Greene Ben Cartwright Actor Michael Landon Little Joe Cartwright Actor Dan Blocker Eric "Hoss" Cartwright Actor Pernell Roberts Adam Cartwright Actor Denver Pyle Guest Star Olive Sturgess Guest Star Terry Becker Guest Star Kelly Thordsen Guest Star Roy Roberts Guest Star Lane Bradford Guest Star John Mitchum Guest Star John Harmon Guest Star Gene Roth Guest Star Rayford Barnes Guest Star Robert Carson Guest Star James W. Lane Executive Producer David Dortort Producer Preston Wood Writer Elliott Arnold Writer William F. Claxton Director