The Sackets is one of my all time favorite. Matter of fact any western with Selleck and Elliott are the bestOne that many don't know about is the original of "The Quick and the Dead." However, one has to search for "Louis L'Amour's The Quick and the Dead" or you end up with the Hackman movie.
Louis L'Amour's stars Sam Elliott in a tale of some folks from Pennsylvania going west and encountering a band of outlaws. Elliott's character helps and teaches them as they go along.
Also with Sam Elliott and Tom Selleck was Louis L'Amour's "The Sacketts." Also had Ben Johnson and a flock of other well known stars in it.