In the 1840s, the desire for new land and the promise of riches drew thousands of Americans westward. But the journey by wagon and on foot was slow and dangerous, and people yearned for a new way to travel. The dream of creating a railroad that spanned the entire country seemed at best fleeting, but the passion of a few ignited a nation. Railroad fever had struck. The transcontinental railroad would forever change the face of the country. Through...