Washington, Chelan quadrangle : land classification and density of standing timber / U.S. Geological Survey ; R.U. Goode, geographer in charge ; triangulation by W.T. Griswold ; topography by R.A. Farmer and W.T. Griswold ; Henry Gannett, geographer in chGeological Survey (U.S.)[1901]."Engraved Apr. 1901 by Julius Bien & Co.""Surveyed in 1897-98."Plate CXXXIII 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 five classes of land cover.cartographic