http://tags.library.upenn.edu/tag/lines+streetcars PennTags Feed http://tags.library.upenn.edu/makerecord/url/39914 http://tags.library.upenn.edu/makerecord/url/39914 <p>Photos, info., compiled maps, scanned maps of Philadelphia region transit lines, especially trolleys.&nbsp; Also has some info about Toronto and San Francisco areas.&nbsp; An enthusiast website.</p>