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Cotton Chopper and Cultivator.

Description: Patent for a machine that allows the user to simultaneously cut down and plow cotton, or perform either task separately. Includes instructions and illustrations.
Date: October 5, 1897
Creator: Hargrove, Byron Lafayette
Partner: UNT Libraries Government Documents Department

Improvement in Construction of Jails.

Description: Patent for improvement in construction of jails; in which a system of flues in between layers of a double floor provide ventilation through grates in the walls and upper layer of the floor, without compromising security.
Date: October 19, 1875
Creator: Seeber, John A. & Croxton, James C.
Partner: UNT Libraries Government Documents Department