Rock Island Line

"Rock Island Line" is an American blues/folk song first recorded by John Lomax in 1934 as sung by inmates in an Arkansas State Prison, and later popularized by Lead Belly. Many versions have been recorded by other artists, most significantly the world-wide hit version in the mid-1950s by Lonnie Donegan. The song is ostensibly about the Chicago, Rock Island and Pacific Railroad.
The chorus to the old song reads:

The verses tell a humorous story about a train operator who smuggled pig iron through a toll gate by claiming all he had on board was livestock.
History
The earliest known version of "Rock Island Line" was written in 1929 by Clarence Wilson, a member of the Rock Island Colored Booster Quartet, a singing group made up of employees of the Chicago, Rock Island and Pacific Railroad at the Biddle Shops freight yard in Little Rock, Arkansas. The lyrics to this version are largely different...