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Image: Salem RR Depot - April 2014 (13969235441)

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Original image(3,680 × 2,456 pixels, file size: 3.93 MB, MIME type: image/jpeg)

Description: Close up of the knob and tube wiring from c.1918.
Author: Oregon Department of Transportation
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes

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