Key map showing which areas of Philadelphia are covered by which numbered, standard Sanborn Co. fire insurance map volumes for the city.
More-or-less essential starting point for using the Sanborn maps in printed or digital form.
Photos, info., compiled maps, scanned maps of Philadelphia region transit lines, especially trolleys. Also has some info about Toronto and San Francisco areas. An enthusiast website.
tagged commuter interurban lines maps philadelphia railroads region streetcars transit trolley trolleys
by edeegan
...on 23-MAR-09

