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Charles Whittlesey (born Southington, Connecticut, 4 October 1808; died Cleveland, Ohio, 18 October 1886) was a geologist and an investigator of mounds relics of the United States.


Whittlesey graduated from the United States Military Academy in 1831, and was assigned to the 5th infantry. In 1832 he was stationed at Fort Howard, Wisconsin, and, after serving in the Black Hawk War, he resigned on 30 September of the same year. After studying law, he followed that profession in Cleveland, and from 1836 to 1837, he was editorially connected with the Cleveland Herald.

In 1837 he was appointed assistant geologist of Ohio, under William W. Mather, and given charge of the topographical and mathematical parts of that survey, which disclosed the rich coal and iron deposits of eastern Ohio that are the foundation of its manufacturing industries. At this time, he also carefully examined and measured several of the works of the mound builders, and his plans and notes of twenty of these remains were embodied in Davis and Squier's Ancient Monuments of the Mississippi Valley (Washington, 1848).

From 1847 until 1851 he was engaged by the U. S. government in making a mineralogical and geological survey of the region about Lake Superior and the upper Mississippi. Subsequently he was professionally engaged as a mining engineer in Michigan, Wisconsin, and Minnesota, and in 1858 became associated in the geological work of the survey of Wisconsin. In February 1861, he was enrolled in a company that tendered its services to Gen. Winfield Scott to escort the president-elect, Abraham Lincoln, to Washington.

He was made assistant quartermaster general on the staff of the governor of Ohio on 17 April 1861, and during the Western Virginia Campaign acted as chief engineer of the Ohio troops. At the expiration of his three-months' service he was appointed, on 15 August 1861, colonel of the 20th Ohio infantry, and detailed as chief engineer of the Department of Ohio, with charge of planning and constructing the defenses of Cincinnati. He was present at Fort Donelson, where he led his regiment, and after the surrender was sent to the north in charge of over 10,000 prisoners. At the Battle of Shiloh he commanded the 3d brigade of Gen. Lewis Wallace's division, but failing health compelled his retirement from active service, and he resigned on 19 April 1862.

He then resumed the geological exploration in the Lake Superior and upper Mississippi basin, and continued his literary labors. In 1867 he was active in the founding of the Western Reserve and Northern Ohio Historical Society, of which he was president until his death.


His bibliography included about 200 titles. In addition to his reports for the geological surveys, he published in the “Smithsonian Contributions”:

  • Descriptions of Ancient Works in Ohio (Washington, 1851)
  • On Fluctuations of Level in the North American Lakes (1860)
  • Ancient Mining on the Shores of Lake Superior (1863)
  • On the Fresh-Water Glacial Drift in the Northwestern States (1866)

He is also the author of:

  • Life of John Fitch, in Sparks's “American Biography” (Boston, 1845)
  • Early History of Cleveland and Vicinity (Cleveland, 1867)


  • Wikisource-logo.svg "Whittlesey, Elisha". Appletons' Cyclopædia of American Biography. 1889.