There was once a time in the not too recent past when scholarly discussion and debate over periodization was central to the task of writing and thinking about the Gilded Age and Progressive Era. Scholars such as Richard Hofstadter, Robert Wiebe, and Samuel P. Hays applied versions of modernization theory to the late nineteenth and early twentieth centuries to produce what came to be known as the “organizational synthesis.” A competing periodization centered on the rise of the large business corporation appeared in works by Martin Sklar, James Weinstein, and James Livingston. Since the 1970s, however, the new social and cultural history has introduced a multitude of new fields and perspectives. By the 1980s, the perceived fragmentation of history had generated an appeal for “synthesis.” In 1986 Thomas Bender called for new and intelligible narrative plots that would transcend “recent scholarship with its intensive specialization, fragmentation, and preoccupation with groups.” Yet, since then, occasional attempts to synthesize have been stillborn, and for the Gilded Age as well as for the Progressive Era the search for synthesis seems to have reached a cul-de-sac with no exit in sight.