UNT Libraries Government Documents Department - 3 Matching Results

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Beaver Creek Quadrangle
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 1:31680
Railroad-Signal
Patent for a railroad signal which will prevent train collisions at railway crossings, with illustrations.
Train-Order Holder.
Patent for Train-Order Holder designed to keep sheets of paper secure and in place to prevent writing on margins and displacement.
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