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Rotary Churn.

Description: Patent for a manual rotary churn with two dasher blades, including instructions and illustrations.
Date: March 12, 1912
Creator: Martin, Harry T.
Partner: UNT Libraries Government Documents Department

Switch.

Description: Patent for a switch for trolley lines that can be triggered from inside the trolley car.
Date: December 12, 1911
Creator: Torrence, Otis M.
Partner: UNT Libraries Government Documents Department

Economic Impacts of Groundwater Management Standards : In the Panhandle Groundwater Conservation District of Texas

Description: "The objective of this study was to conduct an economic analysis of how the 50/50 management standard would impact irrigated producers in the region and the overall agricultural economy. Specifically this analysis was conducted on three levels: county, hydro-logic area, and representative farm. The study focused on the dynamic changes in agricultural production, saturated thickness, farm revenue, and the capacity to irrigate. A socioeconomic model was subsequently used to estimate changes in th… more
Date: February 28, 2012
Creator: Weinheimer, Justin
Partner: UNT Libraries Government Documents Department

Map of Carson County

Description: Blue line print of survey map of Carson County, Texas, showing rivers, creeks, original land grants or surveys, blocks of land, cities, towns, and railroads. Handwritten notes have been made on the published map in pencil to denote the addition of Old Santa Fe Trail and Tascosa Road. Scale [ca. 1:177,778] (4000 varas to 3/4 of an inch).
Date: 1898
Creator: Pressler, Herman
Partner: Hardin-Simmons University Library

Texas Ranches Panhandle Section

Description: Survey map of large ranches in the Texas Panhandle region, including the name and/or the owner(s) of each ranch. Map also includes labeled counties, towns, rivers, creeks, and roads. Handwritten notes have been made to the map in pencil to denote the approximate acreage of a number of ranches.
Date: 1949
Creator: Williams, J. W. & Neal, A. D., Sr.
Partner: Hardin-Simmons University Library
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