Phoenix emerges as hub for billboard and out-of-home advertising (National Today)

The Arizona city has become a center for the billboard and outdoor advertising industry, with major players and industry leaders based there. In the 1960s, Karl Eller transformed a Phoenix billboard company into Eller Outdoor, which later became part of Clear Channel Communications. William Levine also started Outdoor Systems in Phoenix, which was later sold to Arte Moreno and went public in 1996. […]