Geological Section from the Mississippi River to the Pacific Ocean
U. S. Pacific Railroad Exploration & Survey, War Department. Map. Lithograph with original hand coloring. Image measures 26.75 x 38.5". This fascinating geological section of the Mississippi River derives from the investigations of Jules Marcou, a French geologist who worked extensively in North America. In 1853, under the service of the U.S. government, he became the first geologist to cross the United States as part of the Pacific railroad exploration, headed by A.W. Whipple, that was then then underway. This..... More