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Cultivation of Soil.

Description: Patent for improvements in soil cultivation, relating "to conserving and preserving moisture in the soil for growing vegetation" (lines 8-10), including illustrations and instructions.
Date: June 10, 1919
Creator: Lyon, Leonidas N.
Partner: UNT Libraries Government Documents Department

Spindle Lubricator.

Description: Patent for improving the process of lubricating spindles without removing the wheel, and at a more affordable cost.
Date: January 1, 1918
Creator: Stair, Oscar H.
Partner: UNT Libraries Government Documents Department
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