附註:The region / Philip L. Jackson & A. Jon Kimerling -- Historical geography / Mary Lee Nolan -- Population / Gordon E. Matske -- Transportation / Ray M. Northam -- Land use and ownership / James R. Pease -- Landforms and geology / Charles L. Rosenfeld -- Climate / Philip L. Jackson -- Vegetation / Robert E. Frenkel -- Soils / Julia A. Jones -- Water resources / Keith W. Muckleston -- Energy resources and distribution / Steven R. Kale -- Agriculture / Philip L. Jackson -- Commercial timberland resources / J. Granville Jensen -- Ocean resources / James W. Good -- Minerals and mining / Cyrus W. Field -- Manufacturing and industries / William B. Beyers -- Recreation resources and tourism / Mary Lee Nolan -- Hunting and fishing / Gordon E. Matske.