Washington-Idaho, Spokane quadrangle : land classification and density of standing timber / U.S. Geological Survey ; R.U. Goode, geographer in charge ; triangulation by S.S. Gannett ; topography by Van H. Manning ; Henry Gannett, geographer in charge ; laGeological Survey (U.S.)[1901]"Engraved April 1901 by Julius Bien & Co."Surveyed in 1898."Plate CXXXIV 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 six classes of land cover.cartographic