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Automatic Railway-Switch Operating Mechanism
Patent for an automatic railway switch operating mechanism with improved levers and controls.
Date:
August 8, 1911
Creator:
Hoffmann, Laniel F.
Object Type:
Patent
System:
The Portal to Texas History
San Marcos Sheet
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:
1911
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History