File:Tech. Special Car, Worcester Mass.jpg

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English: Early white border postcard of a test trolley used by WPI. Description from source: A postcard of the Worcester Polytechnic Institute, Tech Trolley or Technical Special Car. With the construction of the Electrical Engineering building (Atwater Kent building) in 1907, the Electrical Engineering Department at the Worcester Polytechnic Institute was able to expand its focus on Electric Railroad Engineering with the Tech Trolley, a forty-foot trolley that allowed students to test speed, voltage, current and resistance of rail lines, both inside and outside of the Electrical Engineering building. The Trolley was Pullman-green with gold trimmings and had side and end doors but no regular steps, a precaution for persons who might otherwise mistake it for a passenger trolley. Rolled out of the big west door of the Electrical Engineering building, it tested around 3878 miles of New England's Electric Railways before it was finally decommissioned in 1937.
Date circa 1915-1930
Source Scanned postcard from Digital Commonwealth: Tech. Special Car, Worcester Mass.
Author Unknown authorUnknown author
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This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
Public domain
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.

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Date/TimeThumbnailDimensionsUserComment
current20:45, 3 October 2016Thumbnail for version as of 20:45, 3 October 20162,995 × 1,929 (2.59 MB)Pi.1415926535 (talk | contribs){{Information |Description ={{en|1=Early white border postcard of a test trolley used by WPI. Description from source: ''A postcard of the Worcester Polytechnic Institute, Tech Trolley or Technical Special Car. With the construction of the Electrica...

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