R.H. Donnelley

Dex One Corporation provides online, mobile and print search marketing via their DexKnows.com website, print yellow pages directories and pay-per-click ad networks in the U.S. Dex One Corporation was formed in February 2010. It was previously the R. H. Donnelley Company, which was founded in 1886 by Reuben H. Donnelley, son of RR Donnelley founder Richard R. Donnelley, as The Chicago Directory Company. Donnelley primarily contracted with The Chicago Telephone Company to publish telephone directories for Chicago Telephone customers. In 1906, however, Donnelley would venture outside Chicago, contracting with Bell System firms such as New York Telephone, Wisconsin Telephone, and Cincinnati Suburban Telephone Co. In 1917, The Reuben H....