Jim West doesn't use any devices from the television show (sleeve gun, explosive in boot, etc.) except for the universal pass key he kept in the secret pocket under his coat's lapel.
Robert Conrad (Jim West) and Jeff MacKay (Hugo Kaufman) previously co-starred on the 1976-1978 series "Black Sheep Squadron".
Writer William Bowers named the town where most of the action takes place as Wagon Gap. That's the same name he used for the town in a screenplay he wrote 32 years earlier for Abbott and Costello, "The Wistful Widow of Wagon Gap".
At the end when he was talking to Carmelita he says, "I wouldn't know whether to expect a kiss on the cheek or a knife in the back." That's exactly what happened every week in the right hand corner of the opening credits.
The story of Loveless substituting world leaders with look-a-likes is a recycled plot from one the the episodes The Night of the Brain (1967) of the TV series . The villain in that one was someone other than Dr. Loveless.