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Mason Sheet

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date: 1920
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.75 -99.25
Partner: UNT Libraries Government Documents Department

Automatic Trough-Valve.

Description: Patent for improvements in animal watering troughs that has an automatic float control valve in connection with the trough.
Date: July 20, 1920
Creator: Striegler, Fritz
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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