Wild Eagle: Sergeant, what happened to you? You look terrible. You look bad. You look like you got one foot in happy hunting ground! Agarn: This ain't Sergeant O'Rourke. It's his father. Wild Eagle: Your son should look so good.
Agarn: I think I'd like a palomino. O'Rourke: Now what do you want with a palomino? Agarn: Because any palomino is a pal-o-mine-o.
Forrest Tucker played a dual role as O'Rourke and his father, with no guest stars in this episode.
The lost pairs of troopers had the names of famous duos: Gilbert & Sullivan - British writers of comic operas. Holmes & Watson - Sir Arthur Conan Doyle's detective and his assistant. Lewis & Clark - US Army officers selected for the first transcontinental exploratory expedition in the early 19th century. Stanley & Livingstone - Dr. Livingstone was a medical missionary in Africa, searched for by journalist and explorer Henry Morton Stanley, which was alluded to when Dobbs says that Stanley will find Livingstone. The real Stanley uttered the now-famous line upon finding Livingstone, "Dr. Livingstone, I presume."
The episode title is a nod to the 1937 song, "Did Your Mother Come from Ireland," written by Jimmy Kennedy and Michael Carr.
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