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The city at night has always attracted photographers and every year or so there appears a new book on the subject, either for the tourist trade or the art market. Times Square, in particular, is a favorite, with a sort of permanent daylight, especially now with the huge screens providing perfect moving images.
The Rockefeller Center is a Lego model in their architectural series which nicely doesn’t look like Lego because no studs are visible. John Jakle wrote a book about night-time postcards of American cities: http://www.amazon.com/Postcards-Night-Views-American-Cities/dp/0890134561/ref=sr_1_7?s=books&ie=UTF8&qid=1361536140&sr=1-7&keywords=john+jakle