“The Slickers” by L. Ron Hubbard
Publication date: September 1936
Original publication: Detective Fiction Weekly
Genre: Mystery & Suspense
Story description: With the help of his Colt .45 and a few tricks, a grizzled Arizona sheriff teaches the New York City police a few elementary things about dealing summary justice.
Currently available as part of the Stories from the Golden Age series, in the book The Slickers.