Collection
Counties
4 Matching Results
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Soil Survey of Robertson County, Texas
Text describes the area, climate, agriculture, and soils of Robertson County, Texas.
Date:
January 8, 1909
Creator:
Bennett, Hugh H. & Shaw, Charles F.
Object Type:
Book
System:
The Portal to Texas History
Telephone Attachment.
Patent for a telephone attachment for multi-party lines, which allows the user to hold the line against eavesdropping by other users on the line and let multiple people use the line at the same time.
Date:
November 23, 1909
Creator:
Mitchell, Charles B.
Object Type:
Patent
System:
The Portal to Texas History
Soil map, Texas, Robertson County sheet
Map displays soil types along with lakes, rivers, coal mines, towns, churches, schools, roads, and railroads. Includes legend and soil profiles.
Date:
January 8, 1909
Creator:
United States. Bureau of Soils.
Object Type:
Map
System:
The Portal to Texas History
Carbid-Feed Device for Acetylene-Gas Generators.
Patent for a carbide-feed device for Acetylene gas generators, which prevents moisture from getting into the carbide and causing it to stick to the walls of the feed tube.
Date:
October 19, 1909
Creator:
Weaver, John W.
Object Type:
Patent
System:
The Portal to Texas History