There was an alternative history novel on just that subject however I cannot remember the name of it. It had Manhattasn and the DC area as large radioactive no-go areas some 30 years later and the Kennedy Compound at Hyannisport was an abandoned derelict of a place. It was terminally grim and not all that well-written and I never finished it. That is probably why I cannot remember its name or author.
Also, I was in college at the time and I had a professor who had escaped from Poland and then France one jump a head of the NAZIs. He was from a Polish/Jewish family of considerable wealth and had been an officer in both nations' armies. He wound up as a PFC in the US Army Air Corps in Ogden, UT and saw that they USA could out-waste all of the other powers involved in WWII together and that, since war is essentially a waste, that we would win. (His opinon, stated frequently.) He went to a film and saw a slide asking that any postcards, guidebooks, or other information on cities then under enemy control be sent to an address in Washington, DC. He wrote to say that, while he had none of those, he had lived in Warsaw, Berlin, Vienna, Paris, Rome, and other European cities and knew them well as well as speaking Polish, German, French, Italian, Russian, Yiddish, and English. About two weeeks later, a C-47 landed at the airbase and his sergeant came looking for him, asking what in Hell he had done now. He was to report to the commander's office immediately in his Class A's. He went there and the next thing that he knew, he was on a plane to DC to meet with General William Donovan of the OSS. he spent most of the rest of the War behind German lines. After the War, He was assigned to the US team at Nuremburg where he 1)learned that his entire family had been wiped out in the death camps and 2)met and married a German girl! This was a very interesting man, as you can imagine. He disappeared during much of the Cuban Missile Crisis and his graduate assistant took the class for those few sessions. However, he did show up just at the most crucial point to tell us not to worry, that he was not leaving the country.
He had earlier pointed out that, given his history, his colleagues always asked if he had round-trip tickets when he was travelling abroad. As a point of information, he was an informal advisor to the NSC on Eastern European affairs.