UNDERGROUND PHILADELPHIA: From Caves and Canals to Tunnels and Transit
Philadelphia's relationship with the underground is as old as the city itself. The construction of multiple subway lines took place during the early twentieth century. An intricate subsurface pedestrian concourse was also developed throughout the downtown area for the city's inhabitants. Join the authors as they take us on an underground experience. Illus.
Publisher: History Press
Publishing status: Current
Item #: 2946270