R.H. Donnelley Corporation operates as a yellow pages publisher and directional media company in the United States. It publishes directories in two types, a core directory and a community directory. The core directories cover large population areas, whereas community directories typically cover a sub-section of the areas addressed by a core directory. Both directories contain yellow pages, white pages, and specialty sections. It publishes Sprint-branded yellow pages directories in 18 states, including Las Vegas, Nevada, and Orlando and Lee County, Florida; as well as SBC-branded yellow pages directories in Illinois and Northwest Indiana. The company’s customers include local and national advertisers. RH Donnelley also offer online directories, city guides, and search Web sites. In addition, the company sells local advertising in Illinois and Northwest Indiana onto SBC’s Internet yellow pages platform. RH Donnelley Corporation was founded in 1841 and is headquartered in Cary, North Carolina.