Central Pacific Railroad Photographic History Museum
Cprr History Museum: Pacific Railroad Explorations and Surveys of 1853 54
Provides information and documents of Jefferson Davis, George McClellan and the War Department's Pacific Railroad explorations and surveys of 1853 to 1854.
Central Pacific Railroad Photographic History Museum
Cprr Photographic History Museum: Locating the Central Pacific Railroad
From a book "The First Transcontinental Railroad" by John Debo Galloway, a civil engineer, comes this comprehensive description of the topography of the route of the Central Pacific Railroad.