Got my dads Marx 666 and 999 sets then my first set was the 8111 DT&I switcher set from 1973. I also got some Athearn SF ho trains about the same time.
MTH 20-3043.... The C&O Greenbrier....
Christmas 1989, Christmas 1990 in the upper left, and coincidentally my first train show pick up between the two buildings (which of course was purchased with (“Christmas money"). Sorry for the crummy cell phone shot.