Here is 535 West 156th street (blue tarp covering the front of the building). We lived in the very first apartment (#1).
This and many building on the street are being converted to condominiums.

In 1970 there was a fire that started in the basement of the building, but it was contained pretty fast by firefighters.
Not sure how it got started but there was some politics being played out back then. But that's speculation so I won't go there.

I met the vice president of the condo and after I explained who I was and
why I was there he allowed me to go in look around and of course take some photos. Let's go inside.