Pacific Railway Act, 1862

“Heading of east portal Tunnel No. 8” Photograph shows Chinese railroad worker with a shoulder pole. Alfred A. Hart Photographer. 1865 Photo courtesy of the Library of Congress

Chinese Railroad Workers, Central Pacific Railroad Construction of the Upper Slope of the Prospect Hill Cut, circa 1867

Theodore Dehone Judah, Chief Engineer, Central Pacific Railroad

Monument for Theodore Dehone Judah, Chief Engineer for the Central Pacific Railroad. Old Sacramento, CA.

This photo was taken on May 10, 1869 at the Golden Spike Ceremony. Photo by Andrew J. Russell. Source: Wikimedia Commons, via the Yale University Libraries