Filmways' greatest successes came with sitcoms (i.e. Addams Family, Green Acres, Beverly Hillbillies). Until their final drama, Cagney & Lacey, came along in the early 80's, the studio had next to no luck with dramas.
In 1967, the studio signed British legend John Mills to star in a Western, Dundee & The Culhane, for CBS. The network loved the pilot, they say, but subsequent episodes exposed some flaws, leading to a quick hook, two weeks before Christmas.
Series creator Sam Rolfe came over from MGM, and wrote some of the episodes himself.
All that's available right now are sample clips, like this one: