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  Partner: UNT Libraries Government Documents Department
 County: Harris County, TX
Rotary Steam-Engine.

Rotary Steam-Engine.

Date: August 16, 1859
Creator: Montjoy, George J.
Description: Patent for the improvement of the rotary engine through the arrangement of passages and system of pistons for a more simple construction with little friction, including illustration.
Contributing Partner: UNT Libraries Government Documents Department
Axle.

Axle.

Date: March 31, 1891
Creator: Stewart, John A.
Description: Patent for improvement in axles by using a “combination of a bar, two skeins and means for holding the skeins in place upon the bar,” (lines 17-18) includes illustration.
Contributing Partner: UNT Libraries Government Documents Department
Humble Quadrangle

Humble Quadrangle

Date: 1999
Creator: Geological Survey (U.S.)
Description: 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
Contributing Partner: UNT Libraries Government Documents Department
Katy Quadrangle

Katy Quadrangle

Date: 1980
Creator: Geological Survey (U.S.)
Description: 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
Contributing Partner: UNT Libraries Government Documents Department
Satsuma Quadrangle

Satsuma Quadrangle

Date: 1982
Creator: Geological Survey (U.S.)
Description: 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
Contributing Partner: UNT Libraries Government Documents Department
Addicks Quadrangle

Addicks Quadrangle

Date: 1987
Creator: Geological Survey (U.S.)
Description: 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
Contributing Partner: UNT Libraries Government Documents Department
Cypress Quadrangle

Cypress Quadrangle

Date: 1980
Creator: Geological Survey (U.S.)
Description: 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
Contributing Partner: UNT Libraries Government Documents Department
Harmaston Quadrangle

Harmaston Quadrangle

Date: 1982
Creator: Geological Survey (U.S.)
Description: 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
Contributing Partner: UNT Libraries Government Documents Department
Warren Lake Quadrangle

Warren Lake Quadrangle

Date: 1980
Creator: Geological Survey (U.S.)
Description: 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
Contributing Partner: UNT Libraries Government Documents Department
Aldine Quadrangle

Aldine Quadrangle

Date: 1999
Creator: Geological Survey (U.S.)
Description: 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
Contributing Partner: UNT Libraries Government Documents Department