Thirty years ago a New Yorker article, “The Fifty-Nine-Story Crisis,” recounted the little-known drama of the threatened collapse of a Manhattan skyscraper. In a new book, The Great Miscalculation: The Race to Save New York City’s Citicorp Tower, author Michael Greenburg further investigates the full story of how in 1978 structural engineer William LeMessurier became aware of a critical flaw in his innovative design and the chain of events and responses that followed. A team of engineers and building experts mobilized to analyze and correct a miscalculation that, a generation before 9/11, threatened Midtown Manhattan with a catastrophic collapse of a major tower.