University of Houston
University of Houston: Engines of Our Ingenuity: No. 401: Ibm and the 1890 Census
Learn about the history of the Ferris wheel in this transcript of a radio broadcast. In this transcript of a radio broadcast, we learn about Herman Hollerith, who invented a method of quickly tabulating information from the 1890 census...
Kansas Historical Society
Kansas Historical Society: Kansapedia: Barbed Wire
Provides information on the various types of barbed wire and its uses. Includes photographs of several varieties of barbed wire.