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The Journey of Coronado, 1540-1542, from the City of Mexico to the Grand Canon of the Colorado and the Buffalo Plains of Texas, Kansas and Nebraska

Description: Compilation of translated texts describing the explorations of Coronado and his companions as they traveled in Central American and parts of present-day United States, with some supplementary historical notes for context.
Date: 1922
Creator: Winship, George Parker, 1871-1952
Item Type: Refine your search to only Book
Partner: UNT Libraries

Well-Drilling Device.

Description: Patent for well drilling device with new and useful improvements in well-drilling device for simultaneously drilling the main hole and an advance or "rat-tail" hole.
Date: March 1, 1921
Creator: Smith, Primus W. & Bookhout, John J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Drill-Bit

Description: Patent for new improvement in drill-bits. The object of the invention is to "provide the driller with advanced knowledge of the formation into which he is about to extend his main hole".
Date: January 11, 1921
Creator: Smith, Primus W.; Bookhout, John J. & Monce, Edwin W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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