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Hemphill County

Description: Map of Hemphill County, Texas, including the Panhandle Plains region. The center of Hemphill County is marked on map. Scale ca. 1:133,334 (4000 varas per inch).
Date: September 12, 1887
Partner: Texas General Land Office

Railway Signal.

Description: Patent for a new and improved railroad signal. This design consists in "[a] continuous electric conductor extending beside a railroad, a contact-maker borne by a train, an electric galvanic battery, a stationary transmitter, and a train provided with transmitting and receiving instruments on two or more members of the train and connected with the electric circuit in multiple arc . . . whereby a message can be sent to each member simultaneously" (lines 8-17).
Date: June 7, 1887
Creator: Armstrong, James Henry
Partner: UNT Libraries Government Documents Department

Rail-Joint

Description: Patent for an improvement in rail joints, including illustrations.
Date: December 6, 1887
Creator: Ferguson, George Jones
Partner: UNT Libraries Government Documents Department
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