A railroad across the United States was once thought to be nearly impossible. The vast expanse from the Pacific to the Atlantic Oceans had so many obstacles, including towering mountain ranges and broad rivers. However, the 1862 Pacific Railroad Act tasked two railroad companies, the Central Pacific and the Union Pacific, with building a transcontinental railroad to link the coasts. How they managed to meet finally in 1869 is the important account detailed in this well-researched volume. Readers will learn about key characters, such as engineer Theodore Judah and investor Leland Stanford, and the innovations and technologies that made their extraordinary feat a reality.