Swanson 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
Date: 1919
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History
Plow. (open access)

Plow.

Patent for a plow that can be easily and inexpensively adjusted to plow shallower or deeper.
Date: August 12, 1919
Creator: Kilpatrick, Robert L.
Object Type: Patent
System: The Portal to Texas History