Clint Eastwood, who plays Rowdy Yates, uses the same boots and gun in his Spaghetti Westerns ('Fistful of Dollars', 'For a Few Dollars More' and 'The Good, the Bad, and the Ugly') and his latest western ('Unforgiven') as in the series.
The Sedalia Trail (also known as the Shawnee Trail) ran from Austin, Texas to Sedalia, Missouri. The distance of the trail is approximately 720 miles. In an average day, cattle traveled a distance of 8 miles. Therefore, the entire cattle drive on the Sedalia Trail would have taken about 90 days.
The full names for Wishbone and Mushy are George Washington Wishbone and Harkness Mushgrove III.
John Larch who plays the head prisoner also starred with Clint in Dirty Harry as Callahan's Chief of Police and as a police detective in Play Misty for Me.
Eric Fleming (Gil Favor) rescues Dallas from drowning in a river. On September 28, 1966, Eric died while filming the movie High Jungle for ABC-TV by drowning in the Huallaga River in Peru. Fleming was only 41.