File:PCPOST HudsonRiverTubes 1907.png : Soft.lk - A Premium Software Developers - Meet one of the most powerful and intuitive POS systems for retail in Sri Lanka

21 Aug, 2019
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File:PCPOST HudsonRiverTubes 1907.png

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Summary

DescriptionPCPOST HudsonRiverTubes 1907.png	English: In this 1907 photo, workers in the Pennsylvania Railroad North River Tubes under the Hudson River tighten bolts and caulk the seams.
Date	1 December 1969
Source	Penn Central Transportation Company
Author	Joseph Shallit--Manager, Employe Publications

Licensing

This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art.
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 (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.

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File:PCPOST HudsonRiverTubes 1907.png

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1 December 1969

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