United States Army Officer, Explorer. Born in Hopkinton, New Hampshire, he entered the United States Army as a Lieutenant in the Engineers Corps in 1814 and was transferred to the Topographical Engineers as a Major in 1816. From 1818 to 1823, he supervised the surveying of the West following the Lewis and Clark Expedition between Mississippi River and the Rocky Mountains. Promoted Lieutenant Colonel in 1824, he was the chief surveyor for most of the railroads in western America, 1827 to 1837 and his maps were invaluable to the Union Army during the Civil War. In 1838, he was in command of the expedition with Zebulon Pike to the Rocky Mountains. Known as Long's Expedition, Long's Peak next to Pike's Peak, is named for him. He retired as a Colonel and Chief of Topographical Engineers in 1861.
Bio by: John "J-Cat" Griffith