This is one of our most widely shared articles as many folks are thinking back to their childhoods in Kingsbridge in the 60s. Unfortunately, I have not seen any photos in our archives of W. 231st Street in the 60s. We do have a great one that I think is just a decade or two earlier though. It is undated and apparently taken from the train platform:
Maybe someone who really knows cars could give this a date. Zooming in on the north and south sides of the street:
Best of luck to your brother.