It was just something I saw.
Riverside Drive and Grant's Tomb ( which I am more familiar with, than whoever wrote what you CCPed !) is nowhere near the WTC, by the way, so it would be impossible, for anyone, with even a scintilla of an idea of Manhattan geography, to confuse the events.
And for the record, I was living in Manhattan, in '72.
The wall, which fell onto the HHP, occurred in July of this year.
Whatever you imagine happened on Riverside Dr., near Grant's Tomb, in '72, didn't.
Well you didn't say what the story was from, and it had nothing to do with the topic.