Ralph Lane Polk (1849-1923) was an American compiler of facts and publisher of directories. Born in Bellefontaine, Ohio, Polk was educated at the Pennington School, New Jersey. He became a successful Detroit publisher and president of R.L. Polk & Co. He belonged to the Association of North American Directory Publishers. His son, Ralph Lane Polk Jr. (born 1911), was a later president of the company which was acquired by IHS Inc. on July 15, 2013.
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