I recently discovered an online 1946 phone book. I searched for KV families. It's a little tricky to navigate and search through. Many phone numbers did not, like mine, show up. It's possible my parents couldn't afford a phone? In any case, they were living at 76 Suffolk Street in 1946. The above shows a sampling. Weird that only 10 Monroe and 40 Monroe showed up. Marion Fox cleared that up for me since at that time she said all phone bills and electric bills were addressed to either 10 (West Court) or 40 (East Court). Maybe then they were distributed through the internal KV post office?
More of these samplings to follow. Wonder what would happen if you dialed one of these old numbers?