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Grub-Plow.
Patent for a grub plow with a better cutter, which can be adjusted to different depths of soil.
Date:
August 15, 1911
Creator:
Gardner, Eli J. & Odem, David
Object Type:
Patent
System:
The Portal to Texas History
A Biological Survey of Colorado
From introduction: "Report based chiefly on the field work prosecuted during 1905, 1906, 1907, and 1909. It is primarily a characterization of the several major distribution areas or life zones."
Date:
August 17, 1911
Creator:
Cary, Merritt
Object Type:
Report
System:
The UNT Digital Library