Two Orange Line trains meet while crossing the Mystic River. Boston lies a few miles to the right, points North to the left. The bridge in the background carries commuter rail to Rockport.
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.