Frederick Arthur Ambrose Talbot, The Railway Conquest of the World (1911)
“ Yet the “Hanging Bridge” is but one of many engineering wonders to be found on this railway. Go where one will over its 1,800 miles of track among the Rockies, and some striking and daring work confronts one at every turn. Here the railway threads its way through a winding abyss, there it passes over the crown of a towering peak, or toils laboriously up the side of a sheering cliff. No two miles are alike. In all it traverses five yawning canyons, each possessing a strange individuality, and crosses the mountain backbone by which the continent is split in twain by three different passes. ”
