"Location as a Factor in Geography", Annals of the Association of American Geographers, Vol. 17, No. 2 (Jun., 1927), pp. 92–99 1933. "Geographic and Political Boundaries in Upper Silesia", Annals of the Association of American Geographers, Vol. 23, No. 4 (Dec., 1933), pp. 195–228. 1935. (and Samuel N. Dicken) "A Classification of the Agricultural Regions of Europe and North America on a Uniform Statistical Basis", Annals of the Association of American Geographers, Vol. 25, No. 2 (Jun., 1935), pp. 99–120. 1935. "Recent Developments in Political Geography, I", The American Political Science Review, Vol. 29, No. 5 (Oct., 1935), pp. 785–804. 1935. "Recent Developments in Political Geography, II", The American Political Science Review, Vol. 29, No. 6 (Dec., 1935), pp. 943–966. 1938. "Six Standard Seasons of the Year", Annals of the Association of American Geographers, Vol. 28, No. 3 (Sep., 1938), pp. 165–178. 1940. "The Concepts of 'Raison d'Être' and 'Maturity' of States; Illustrated from the Mid-Danube Area", Annals of the Association of American Geographers, vol. 30, pp. 59–60; 1940. 1941. "The Politico-Geographic Pattern of the World", Annals of the American Academy of Political and Social Science, Vol. 218, Public Policy in a World at War (Nov., 1941), pp. 45–57. 1958. "The Concept of Geography as a Science of Space, from Kant and Humboldt to Hettner", Annals of the Association of American Geographers, Vol. 48, No. 2 (Jun., 1958), pp. 97–108. 1960. "Political Geography in the Modern World", The Journal of Conflict Resolution, Vol. 4, No. 1, The Geography of Conflict (Mar., 1960), pp. 52–66. See also Geographers on Film References 1899 births 1992 deaths People from Kittanning, Pennsylvania American geographers Presidents of the American Association of Geographers Human geographers Victoria Medal recipients 20th-century geographers