File:Hall disc signal 1909.jpg
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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
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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.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:28, 5 October 2011 | | 384 × 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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