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Cleburne 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:
1921
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Carbon-Removing Tool
Patent for a new and improved carbon removing tool, which allows for the removal of carbon from the pistons of internal combustion engines. Includes illustrations.
Date:
April 12, 1921
Creator:
Slagle, Eugene H.
Object Type:
Patent
System:
The Portal to Texas History