Photos show sleek $200M upgrade to New York Public Library’s biggest branch

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Before-and-after photos show the dramatic $200 million renovation of the New York Public Library’s biggest branch — complete with 400,000 books, floor-to-ceiling shelves, and an entire level for kids and teens. The venerable building on 40th Street and Fifth Avenue in Manhattan was upgraded from a gutted place with a 1978 interior into a bright, modern space for browsing, according to images provided exclusively to The Post.