In an era when it feels ever harder to trust what you're seeing, how edifying to find something "fake" that actually authenticates a genuine, old-school, artisanal flair. That's not to deny the technological short-cuts nowadays available to John Cox, compared to when he started trading out of his garage back in 1982. But anyone touring the Lexington premises of Thorough-Graphics--this Aladdin's cave, teeming with color and invention, where Cox and his family supply around 70 percent of signage to the local Thoroughbred industry--will unfailingly be drawn to the "antique" signs...