Alfred Hart 1865-1869 Blue Canyon Embankment, 75 feet high [Central Pacific Railroad, California. Scenes in the Sierra Nevada Mountains. No. 000]
Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s00524 (digital file from original photo, front) LC-DIG-stereo-2s00524 (digital file from original photo, back)