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Smiley 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:
1920
Creator:
United States. Army. Corps of Engineers.
Object Type:
Map
System:
The Portal to Texas History
Clevis Attachment for Plows.
Patent for an agricultural plow attachment that allows for more precision concerning the measurement of depth of the plow point against different types of terrain/soil conditions.
Date:
February 13, 1920
Creator:
Wolter, Fred W.
Object Type:
Patent
System:
The Portal to Texas History