Oregon, Roseburg quadrangle : land classification and density of standing timber / U.S. Geological Survey ; Henry Gannett, chief topographer ; R.U. Goode, geographer in charge ; triangulation by W.T. Griswold ; topography by E.C. Barnard ; Henry Gannett,Geological Survey (U.S.)[1900]."Julius Bien & Co. Lith. N.Y.""Surveyed in 1894-95."Plate CXXVIII from the "Twenty-first annual report" of the U.S. Geological Survey, Part 5, Forest reserves (1900).Relief shown by contours and spot heights.Shows four classes of land cover.cartographic