highgreen215 wrote:They were used on Providence trains too - I rode behind one of them lashed to (I think) a Geep at least once to Route 128.
There were four PAs and only three Framingham trains at the time, so on days when all four units were available the fourth would sometimes run down to Providence as the trailing unit behind an E8 or GP9. The PAs couldn't lead on the Shore Line because they lacked cab signals. Former PRR E-units had cab signals compatible with the NH's system, so they had no problem leading.
And as long as we're all getting historical, in addition to the B&A, the Needham branch was the other South Side line allowed non-cab-signaled power, because until the Southwest Corridor reconstruction the Needham branch had its own dedicated single track from Chickering Tower (just south/east of Back Bay Station) to Forest Hills. I remember a former New York Central RS3 assigned to one of the rush hour Needham trains around 1970, and when the B&M took over commuter operation a B&M GP9 was assigned there for a while (with an ex-CN steam generator car to provide car heat).