Great Railroad Tunnels of North America - Putnam, William Lowell

Describing and detailing the boring of major railroad tunnels throughout Canada, the US, and Mexico, this covers the period from the creation of Virginia's Blue Ridge Tunnel in the 1850s to Copper Canyon's Continental and El Descanso tunnels in the early 1960s. In addition to providing details on the tunnels, it considers the reasons they were created, their engineers, and their use.