The classic "STOP" tail light still burns bright on this PCC car. Since the Mattapan line runs on its own right of way, the benefits of this detail are generally lost. It's a testament to the street car origins of the design.
The MBTA is very dear to me. The first trains I ever rode as a toddle to teenager were those of the "T" Here is a collection of MBTA Subway and trolley I have found on RP from the 60's thru today.