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Map Showing the Route of the Late Expedition, Commanded by Rear Admiral Porter, U. S. Navy, in Attempting to Get Into the Yazoo River by the Way of Steele's Bayou and Deer Creek

Description: Map illustrating the Mississippi River, Yazoo River, creeks, cities, and gun emplacements surrounding a gunboat route through Mississippi. The shaded area is where the gunboats actually traveled. The dotted line is an additional portion of the proposed route. In the upper right corner is a map that showed where the gunboats were to fall back.
Date: 1911
Creator: United States. War Department.
Item Type: Refine your search to only Map
Location: None
Partner: UNT Libraries Government Documents Department

Valve

Description: Patent for an automatic valve for use upon hydraulic or suction dredges to prevent sore material such as clay, sand and mud from preventing the efficient use of the dredge sure to the closing of heavy material in the mouth of the dredge. The valve is intended to supply water to flush out the mouth of the dredge.
Date: June 12, 1917
Creator: Miller, Henry L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Sand-Trap

Description: Patent for a sand-trap that will prevent the accumulation of sand by automatically removing the sand from the canals.
Date: unknown
Creator: Hood, James M,
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Canal or Ditch Digging Machine.

Description: Patent for a canal or ditch digging machine that has a carriage and a mechanism that draws the carriage across the ground, and a boring-tool beneath the carriage. The boring-tool can bore at an adjustable angle.
Date: August 20, 1895
Creator: Hoefs, Otto
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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