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Relay room at 13th St. Interlocking showing plug-in relays, RPQ rectifiers, and ground detector apparatus, Chicago Subway, CRT

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Filename:	95-c-232.jpg
Album name:	admin / Steel Cases & Racks (Inside)
Filesize:	410 KiB
Date added:	Jul 16, 2013
Dimensions:	2048 x 1590 pixels
Displayed:	78 times
URL:	http://rrsignal.com/photos/displayimage.php?pid=6552
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