[posted] Posted (#45179, American) !
Al Haines
ajhaines at shaw.ca
Thu Mar 20 10:27:20 PDT 2014
The Invention of the Track Circuit, by American Railway Association 45179
[Subtitle: The history of Dr. William Robinson's invention of the
track circuit, the fundamental unit which made possible
our present automatic block signaling and interlocking
systems]
[Link: http://www.gutenberg.org/4/5/1/7/45179 ]
[Files: 45179.txt; 45179-h.htm]
Thanks to The Online Distributed Proofreading Team at
http://www.pgdp.net (This file was produced from images
generously made available by The Internet Archive/American
Libraries.)
Regards,
Al
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