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A New Device for Locating Hidden Pipes
Reprinted article describing a device that detects buried or hidden pipes based on magnetic deflection, by reducing the control effects of the earth's magnetic field. It includes photographs of the device and its use, as well as data graphs. Some text is underlined in red and blue, and there is a pencil sketch at the very end.
Date:
1935
Creator:
Hoare, S. C.
System:
The Portal to Texas History
[Advertising Flyer for Model B Typhoon Super-Charger]
Pamphlet advertising a mechanism that can be installed in cars to "super charge" their performance by affecting the flow of air into the carburetor. It includes information about how it works, why it is economical, and images of testimonial letters.
Date:
1935~
Creator:
Typhoon Manufacturing Company
System:
The Portal to Texas History