On the morning of May 10, 1869, a gang of Irish immigrants met a party of Chinese laborers on a windy bluff northwest of Salt Lake City, Utah. Tired to the bone, the two groups laid down the last of countless wooden ties, bought at the exorbitant cost of six dollars apiece, and thus joined two great rail lines, the Union Pacific and the Central Pacific, to form a single transcontinental route. That rail line made possible the mass settlement of the West, and, as those who conceived it well knew, it changed the course of American history. David Haward Bain"s superb narrative of westward rail history, weighing in at 800 pages, ends not with this great achievement but with the political and financial scandal that would almost overshadow it. Along the way Bain looks closely at the entrepreneurial men who foresaw the possibilities of a vast nation joined by a steel ribbon--most memorably the hit-and-miss businessman Asa Whitney, who proposed to Congress an ingenious scheme to fund the building of the railroad through commercializing the right of way. Some of the men who came after Whitney, such as Mark Hopkins, Collis Huntington, and Leland Stanford, amassed great fortunes in realizing this dream. Others died penniless and nearly forgotten in the wake of political maneuverings and bad deals. Bain"s vigorous, well-written narrative does much to restore those overlooked actors to history. --Gregory McNamee