Automatic lock. (open access)

Automatic lock.

Patent for a gate lock that automatically locks.
Date: March 24, 1924
Creator: Parker, Robert N.
Object Type: Patent
System: The Portal to Texas History

Mathis No. 2 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 1:48000
Date: 1925
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Mathis 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 1:62500
Date: 1927
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Robstown 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 1:62500
Date: 1925
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Mathis No. 3 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 1:48000
Date: 1925
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Robstown 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 1:62500
Date: 1925
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Aransas Pass 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 1:62500
Date: 1925
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History
Rail-Joint (open access)

Rail-Joint

Patent for a rail joint that is new and improves already existing rail joints specifically scarf joints.
Date: October 26, 1920
Creator: McDonald, John A.
Object Type: Patent
System: The Portal to Texas History