On the evening of July 12, 1893, in the hall of a massive new Beaux-Arts building that would soon house the Art Institute of Chicago, a young professor named Frederick Jackson Turner rose to present what would become the most influential essay in the study of U.S. history.
It was getting late. The lecture hall was stifling from a day of blazing sun, which had tormented the throngs visiting the nearby Chicago World’s Columbian Exposition, a carnival of never-before-seen wonders, like a fully illuminated electric city and George Ferris’ 264-foot-tall rotating observation wheel. Many of the hundred or so historians attending the conference, a meeting of the American Historical Association (AHA), were dazed and dusty from an afternoon spent watching Buffalo Bill’s Wild West show at a stadium near the fairground’s gates. They had already sat through three other speeches. Some may have been dozing off as the thin, 31-year-old associate professor from the University of Wisconsin in nearby Madison began his remarks.