Maps included: Drainage and Political and Planning Subdivisions -- Landforms of the Northwestern States -- Average Annual Precipitation -- Average Monthly Temperatures -- Average Frost Free Growing Season -- Soil Association of the Pacific Northwest -- Erosion -- Soil Conservation Problem Areas -- Land Use Capability Classifications -- Crop Land and Land Development Areas -- Generalized Forest Type Map -- Generalized Range Types -- Natural Surface-Water Supply Areas -- Acreage of Irrigated Land, 1939 -- Proportion of Land Area Devoted to Major Uses, 1940 -- Types of Farming -- Trend in Size of Farms 1920 to 1940 -- Value Per Acre of All Land in Farms, 1940 -- Winter Wheat, Spring Wheat and Barley Harvested, 1939 -- Tomatoes, Vegetables, Peas (green), Asparagus, Onions (dry), and Sweet Corn Grown for Sale, 1939 -- Land in Fruit Orchards, Vineyards, and Planted Nut Trees, 1939 -- Cattle, Sheep and Lambs Sold, 1939 -- Trend in the Number of Dairy Cows and Heifers, 1920 to 1940 -- Major Transportation Lines -- Primary Forest Industries -- Distribution of Population, 1940 -- Value Per Farm of all Farm Products Sold, Traded, or Used in Household, 1939 -- Acres Available for Crops Per Capita of Farm Population, 1940 -- Age & Condition of Rural Dwellings -- Farmer Cooperative Associations -- Soil Conservation Districts and Activity Centers.