Laying Transcontinental Railroad. Workers in around 1868,in Nevada,USA,constructing part of the Central Pacific Railroad (CPRR) section of the Transcontinental Railroad. Titled 'End of track,on Humboldt Plains',this albumen photograph is part of a set of 364 stereoviews taken by the official CPRR photographer Alfred A. Hart (1816-1908). This area is where the railroad passed along and near Nevada's Humboldt River. This western half of the First Transcontinental Railroad was built between 1863 and 1869,covering 1100 kilometres from Sacramento,California,to Promontory Summit,Utah,connecting with the railroad's eastern half |