Yep, back then the double vs single letter made a difference - usually the double-letter was a local and the single letter was an express
Huh. Didn’t remember it. I did take the LL everyday to school.
ETA: Memory on its floppy cat’s feet brings back the GG at Continental Ave in Forest Hills, and maybe the EE (sort of local E vs. sort of local F from there).
People were never allowed to walk between the trains, people just did. If a cop caught you, you’d get a ticket. And these old trains were not in regular service. It was always a surprise to walk into the time machine. And all the trains had conductors. They’re the guys who open the doors.