[Portland, Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 1988.
Scale 1:24,000. (W 121⁰30ʹ--W 121⁰00ʹ/N 43⁰30ʹ--N 42⁰00ʹ).
Relief shown by contours and spot heights. Cover title. At head of maps: United States Department of the Interior, Geological Survey, modified for USDA Forest Service. Shipping list no.: 89-624-P. Includes index to Geological Survey topographic maps. Sheets include quadrangle location diagrams and transportation system updates.