Graphic summaries of the chief census figures regarding agriculture, designed to bring out certain needed points in the most salient way, are an answer to practical demands in war as well as in peace. Maps, singly or consecutively, not only present facts but also show how acreage and production are affected by economic and climatic factors, by man-made adjustments, by soil-damage, and now by dislocations of war, which were influencing our whole economic structure by the end of 1939.