Dr. Ferdinand Vandeveer Hayden (September 7, 1829 - December 22, 1887) was an American geologist noted for his pioneering surveying expeditions of the Rocky Mountains in the late 19th century.Read more
Dr. Ferdinand Vandeveer Hayden (September 7, 1829 - December 22, 1887) was an American geologist noted for his pioneering surveying expeditions of the Rocky Mountains in the late 19th century.