One suggestion here would be "The Yiddish Policemen's Union"
http://www.amazon.co....-Chabon/dp/0007150393
Detective novel which takes place in a world where the Jews were given a slice of Alaska instead of Israel, a short summary of the background from a Amazon review:
"The novel supposes that in 1940 the American Congress had passed the Sitka Settlement Act to allow the persecuted Jews of Europe to seek refuge, for an interim period of sixty years, in the newly created autonomous `federal district' of Sitka on Baranof Island, which my atlas tells me is a narrow sliver, about 100 miles long and 25 miles wide, in the south-eastern tail of Alaska. But it was a kind of ghetto: to appease the American public, the Act prohibited the refugees from moving off the island. A trickle of Jews, mainly from Germany and Poland, are supposed to have arrived there soon afterwards, to be joined after the war by a flood of Displaced Persons and other Jews who could not go to Israel, because that state is supposed to have been snuffed out by the Arabs after only three months. After the sixty years were up, Sitka was to `revert' to become part of Alaska and the Jews of Sitka were supposed to find somewhere else to go. By that time Sitka had a population of two million and had acquired a thoroughly Yiddish character, with Yiddish names for shops, districts and public buildings, Yiddish (secular) cops and Yiddish (religious) gangsters - all to the resentment of the original inhabitants of the area, the Tlingit Indian tribe. The book opens as the date of the `Reversion' draws near."
It's wonderfully funny :)