Historian of architecture, engineering, and the urban history of Chicago, Thomas Leslie, guest co-curator with Carol Willis for the Museum’s exhibition The Modern Concrete Skyscraper, will summarize the new avenues of research that grew from research on the exhibition. This in-person program traces the history of concrete skyscraper construction in Chicago, highlighting how the material challenged the more established steel industry in the city and how local organizations played pivotal roles in advancing concrete technology to new heights.