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Explosive-Engine. (open access)

Explosive-Engine.

Patent for "an improved engine of the internal combustion type, in which the explosion occurs between two oppositely moving pistons arranged in a cylinder and connected with independent crank shafts." (lines 13-17). The engine also includes a new type of valve gear with mechanically triggered valves and an apparatus for the forced water cooling of the engine.
Date: November 19, 1918
Creator: Cooper, Willis W.
Object Type: Patent
System: The Portal to Texas History
Transactions of the Regional Archeological Symposium for Southeastern New Mexico and Western Texas: 1981 (open access)

Transactions of the Regional Archeological Symposium for Southeastern New Mexico and Western Texas: 1981

Proceedings of the 17th regional archeological symposium including the text of papers presented during the conference. Includes the event program, meeting minutes for the April 4, 1981 SWFAS Executive Committee, and the SWFAS by-laws.
Date: 1982
Creator: Couzzourt, Jim
Object Type: Book
System: The Portal to Texas History

Grass, Legume and Forb Cultivation

Photograph of old planting of Weeping Lovegrass. Planted on weed cover around 1948. TX-201-12.
Date: September 28, 1955
Creator: Ebersole, J. C.
Object Type: Photograph
System: The Gateway to Oklahoma History

Motley County

Blue line print of survey map of Motley County, Texas, showing rivers, creeks, original land grants or surveys, blocks of land, cities, roads, and railroads. Handwritten notes have been made on the published map in red pencil and appear to denote the addition of names and roads. Scale [ca. 1:200,000] (6000 varas to the inch).
Date: 1914
Creator: Ehlinger, L.
Object Type: Map
System: The Portal to Texas History

Afton 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 1:24,000
Date: 1981
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Afton Quadrangle

Satellite image 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 1:24,000
Date: 2010
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Afton 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 1:24000
Date: 2012
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Afton 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 1:24000
Date: 1971
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Ballard Camp 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 1:24,000
Date: 1981
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Ballard Camp Quadrangle

Satellite image 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 1:24,000
Date: 2010
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Ballard Camp 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 1:24000
Date: 2012
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Ballard Camp 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 1:24000
Date: 1981
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Ballard Camp 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 1:24000
Date: 1968
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Childress

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 1:100000
Date: 1994
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Childress

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 1:100000
Date: 1986
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

China Canyon 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 1:24,000
Date: 1981
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

China Canyon Quadrangle

Satellite image 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 1:24,000
Date: 2010
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

China Canyon 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 1:24000
Date: 1981
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

China Canyon 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 1:24000
Date: 2012
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

China Canyon 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 1:24000
Date: 1971
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Cottonwood Camp 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 1:24,000
Date: 1981
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Cottonwood Camp Quadrangle

Satellite image 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 1:24,000
Date: 2010
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Cottonwood Camp 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 1:24000
Date: 1981
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History

Cottonwood Camp 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 1:24000
Date: 2013
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History