Ralston Outdoor Advertising, Ltd., founded in 1976 by Douglas R. Ralston, is the largest, independent outdoor advertising company in Dallas, Texas. Our company offers a variety of billboard sizes from 14x48 highway bulletins to 10x20 Plano boards throughout the greater Dallas-Fort Worth metroplex and other North Texas locations. In addition, Ralston Outdoor has one of the largest inventories of billboard units on surface streets in the city, and we provide locations that service the Hispanic market.