Chicago’s tallest skyscraper when it opened in 1921, the Wrigley Building could be called the Midwest’s Woolworth Building. The gleaming white terra-cotta tower at the head of Michigan Avenue marked a move that opened the northward extension of the commercial concentration of the Loop. To celebrate the publication of the handsome new monograph The Wrigley Building: The Making of an Icon, the Museum will convene a two-session program that features a presentation by the book’s authors and a symposium of scholars that places the building in context and contrast to the contemporary towers of New York.