This is a nice concise history of the Pennsylvania Turnpike. It focuses mainly on the competition between the railroads which led the Vanderbilts to select a route for a new railroad across southern Pennsylvania and partially complete several tunnels before abandoning the project. That route and some of the tunnels were used for the turnpike fifty years later. There are many photographs in the book, including photos of the tunnels as they looked in 1937 after having lain dormant for all those years. There are also a few photos of the turnpike as it looked in its early days.