Ferdinand Vandeveer Hayden
American geologist
Died when: 58 years 106 days (699 months)Star Sign: Virgo

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.
He was also a physician who served with the Union Army during the Civil War.
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