| Alfred Hart Tunnel No. 15. Looking east, toward Nevada [Central Pacific Railroad, Nevada.] 1865-1869 Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s00588 (digital file from original photo, front) LC-DIG-stereo-2s00588 (digital file from original photo, back) LL/108948
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