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[Letter from Supervisor H. E. Keller to Dallas, Texas Bureau of Identification Superintendent D. E. Walsh - 10/31/1933]

Description: Letter from H. E. Keller, the Supervisor of the Identification Bureau in Houston, Texas to D. E. Walsh, Superintendent of the Identification Bureau in Dallas, Texas thanking him for the photographs he sent from the Urschel Kidnapping case.
Date: October 31, 1933
Creator: Keller, H. E.
Item Type: Refine your search to only Legal Document
Partner: Dallas Municipal Archives

Method of Treating Ores.

Description: Patent for "new and useful Improvements in methods of Treating Ores, of which the following is a specification. The present invention relates to a method of treating ores carrying gold and silver values in any form amenable to cyanid treatment or flotation" (lines 6-12).
Date: May 8, 1917
Creator: Friberger, Harry Louis
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Refrigerating Apparatus

Description: Patent for a refrigerating apparatus. This invention is a coil composed of two pipes of different diameters placed inside of each other acting as a condensing agent. Illustration included.
Date: February 12, 1907
Creator: Holdgreen, Julius H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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