A lively account of the heroic men who did what many thought impossible and built a railroad to connect America’s East and West coasts. They faced extremes of weather, hostile Natives, dynamiting through mountains— and in the Sierra Nevada range where that was impossible, they laid track on the mountains’ edge. Before the railroad, travel from New York to California took six months or more, and some didn’t survive the journey. After the railroad, one could make the trip from sea to shining sea in just six days. (3rd and 4th grade reading level.)