The devil's rope': How barbed wire changed America - BBC News
Barbed wire advertisement - Kansas Memory - Kansas Historical Society
Barbed wire advertisement hi-res stock photography and images - Alamy
Images of Johnstown's Stone Bridge
Anti-Live Barbed Wire advertisement. Available as Photo Prints, Wall Art and other products #14139526
Tom Goodwin on Twitter: "The best genre of ad is the "radically change existing behavior" ad needed when a new technology comes along Get them to ditch the horse. Try a talking