1 map on 2 sheets : col. ; 95 x 140 cm Relief shown by hachures. Border includes flags of various countries, map of the world, and views of Washington, D.C., New York, Mount Vernon and the Capitol building. Includes profiles of the continent along 42nd parallel, route for the Pacific Railroad and the North Atlantic. Includes a circular chart which shows solar time variation from the National Observatory in Washington, D.C.