7, 8, 9.
MBTA 3917 is seen laid up at the T's Reservoir Carhouse. In the background, Kinki Sharyo Type 7 LRVs and an AnsaldoBreda Type 8 LRV can also be seen, providing a comparison of the three models of LRV currently operating on the Green Line.
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.