Pennsylvania
Philadelphia 
Philadelphia consists of a heavy metro, several light rail and tram lines, and
an interurban.
Official
Septa home page
A few
photos I took of the Norristown Line and the "new" SEPTA LRTs in the early
1980's
Philadelphia
Area Traction Fan's Page
SEPTA:
Southeastern Pennsylvania Transportation Authority
Sandy
Smith's Home Page
Stan
Freidman's SEPTA photos
The
Schykill Valley Metro 
Joe
Lance's SEPTA photos
A
Barrelfull of Pennsylvania Transit Links
PATCO
Home Page
Philadelphia's
Historic PCC's
The
Grade Crossing
Photos of the new
Frankford Transportation Center from the
Philly NRHS
Septa 2168 in the Broad Street tunnel courtesy of Herman R. Silbiger
Pittsburgh
Pittsburgh
transit photos by a PAT worker (no name given)
Port
Authority Home Page
Pittsburgh Gazette News - the
closing of the Drake Line
Photos Courtesy Stefan MashkevichHonorable
Mention: Scranton
No, there is no subway in Scranton, Pa. However, there are
rumors of a subway that never existed. Laurel Hill does have a refurbished
trolley line that goes through a
tunnel in "downtown". There are stations on each end but not inside the
tunnel.
Septa 2168 in the Broad Street tunnel courtesy of Herman R. Silbiger
