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File:Hall disc signal 1909.jpg

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Hall_disc_signal_1909.jpg (384 × 537 pixels, file size: 150 KB, MIME type: image/jpeg)

Summary

Description
English: View of disc-style railroad signal manufactured by Hall Signal Company. The signal is displaying the "Clear" indication.
Date
Source "The ABC of Railroad Signaling." p. 7. (Chicago: Mackenzie-Klink Publishing Co.)
Author W. H. Elliott, New York Central and Hudson River Railroad.

Licensing

Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.

United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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Date/TimeThumbnailDimensionsUserComment
current04:28, 5 October 2011Thumbnail for version as of 04:28, 5 October 2011384 × 537 (150 KB)Caseyjonz== Summary == {{Information |Description={{en|1=View of disc-style railroad signal manufactured by Hall Signal Company. The signal is displaying the "Clear" indication.}} |Source=[http://books.google.com/books?id=5mUEAAAAMAAJ&dq=

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