Although his name is little known today outside Iowa, during the early part of the twentieth century Benjamin Shambaugh (1871-1940) was a key figure in the historical profession. Using his distinguished career as a lens, Conard's seminal work is the first book to consider public history as an integral part of the intellectual development of the historical profession as a whole in the United States. Conard draws upon an unpublished, mid-1940s biography by research historian Jacob Swisher to trace the forces that shaped Shambaugh's early years, his administration of the State Historical Society of Iowa, his development of applied history and common-wealth history in the 1910s and 1920s, and the transformations in his thinking and career during the 1930s. Framing this intriguingly interwoven narrative are chapters that contextualize Shambaugh's professional development within the development of the historical profession as a whole in the late nineteenth and early twentieth centuries and assess his career within the post-World War II emergence of the modern public history movement. Shambaugh's career speaks to those who believe in the power of history to engage and inspire local audiences as well as those who believe that historians should apply their knowledge and methods outside the academy in pursuit of the greater public good.