The trade cards are small, colorfully illustrated advertising cards touting a particular medicine and its many cures. The illustrations often have little to do with any of the ailments purported to be cured. They were pure advertising and very collectible.
One side of the card shows a black and white caricature of a crying baby holding a cat by its tail. The baby is sitting up, its eyes closed tightly in pain, dripping large tears, with its mouth wide open, bawling. The baby's left hand holds tha cat's tail, but we see only its tail and hind legs. Above the baby is printed, "The Prince of Wails," and underneath is, "Minard's Liniment, King of Pain." The other side of the card bears the text.