R.L. Polk & Co
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R.L. Polk & Co
Portrait of Ralph L. Polk, ca.1905

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.[1][2][3] 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[4] which was acquired by IHS Inc. on July 15, 2013.[5]


  1. ^ Herringshaw, T. W., Herringshaw's national library of American biography, 1909-1914
  2. ^ Albert Nelson Marquis (1914), The Book of Detroiters, Chicago: A. N. Marquis & Company
  3. ^ Livingstone's History of the Republican Party. 1900.
  4. ^ Who's Who in the Midwest, 6th ed., 1958
  5. ^ "R.L. Polk & Co. (POLL)". Bloomberg. Retrieved 2013.

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