A delightful blend of serious meteorology and beautiful illustrations, this informative book displays the many talents of Eric Sloane. A writer, landscape painter, weather forecaster, and authority on early American history, Sloane takes readers with him on a voyage of discovery as he traces a single air mass from the Canadian Rockies to northern New England. A vivid narrative and the author's own pen-and-ink sketches describe the progress of the air mass over America, and tell about its encounters with other elements of weather systems and with Americans from a variety of backgrounds.