Back in November of 1965 much of the northeast was unexpectedly without power. The blackout started right after the start of rush hour in NYC. I remember it well. I was living in East New York Brooklyn at the time. My Dad was at work in Manhattan and the J-train which he would normally ride home wasn't running, as were none of the subways running. He walked the entire way home, from Manhattan, over the Williamsburg Bridge and into Brooklyn. Quite a long walk on a dark night.
Here is some news footage from that November night. It's kind of weird to see the news studio lighted by candles.