As I was writing up the sources for yesterday’s post, I went back to my notes on my conversation with my mother-in-law regarding the D'Arco family house in Newark. She had remembered and given the addresses! James Street was the address of Nicholas D’Arco’s store; the family house was located at 446-8 Summer Avenue. This is the street view picture Google Maps gives for that address:
I think this is the right house.