DescriptionDonner Pass Summit Tunnel West Portal.jpg
English: Composited digital illustration depicting the West portal of the CPRR's "Summit Tunnel" (Tunnel #6) which was in continuous use by the CPRR, SPRR, and UPRR from 1868 to 1993 at Donner Pass (Norden, California) on Track #1 of the original "Sierra Grade" of the Central Pacific Railroad. (The tracks removed in 1993 have been digitally restored in this illustration.)
Date
Source
(Original text: The Cooper Collection of US Railroad History (private collection))
Author
DigitalImageServices.com
Other versions
other versions not released under a free license
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
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