Seems funny to think that 1982-1984 was back in the day, but I guess it is.
I haven't been to Lawrence Yard in years, but "back in the day" my father and I would head over there on Friday nights with a pizza. A steady stream of MBTA trains, switcher action, and road freights. The big thrill was seeing MELA arrive and gawking at the D&H power, so exotic to me at the time -- I can recall marveling at how filthy dirty the D&H locomotives were compared to the B&M geeps and hoping against hope that an Alco would be in the mix. If you were really lucky, you might also catch some MEC pooled power.
On one of those Lawrence visits, a kind engineer waved my father and I onto GP-40 #315 and gave us a short ride.
Good times!