Rundell (1963) has examined Webb's main books to see what inspired and prompted the writing of each, what the purpose and message of each seems to be, and Webb's emergent philosophy of history. The professional reception of these studies was also considered. The message of "The Great Plains" (1931) is contained in its subtitle 'A Study in Institutions and Environment.' Its primary purpose was to present representative ideas about the region rather than to write its history. Webb called the settled area of Europe 'the Metropolis' and the rest of the world 'the Great Frontier', claiming that "the Great Plains environment... constitutes a geographic unity whose influences have