At one time this city had one of the largest streetcar fleets in the world. From PRT to SEPTA, this video tells the history of Philly trolleys from their early years in photos, to the 1930s B&W film, color in the 1950s to the 1980s plus video of the short lived PCC Welcome Trolley Line. Copyright 1995 GPS Video. Revised in 2004. 60 Minutes. Color and BW.