Eleutherian Mills Historical Library
du PONT, Henry Algernon (1838-1926)

DU PONT, HENRY ALGERNON, (cousin of Thomas Coleman du Pont), a Senator from Delaware; born at Eleutherean Mills, New Castle County, Del., July 30, 1838; attended private schools; attended the University of Pennsylvania in Philadelphia in 1855; graduated from the United States Military Academy, West Point, N.Y., in 1861; served in the United States Army until 1875; during the Civil War served in the Union Army, attaining the rank of lieutenant colonel; awarded a Congressional Medal of Honor for his handling of the retreat at the battle of Cedar Creek; was president and general manager of the Wilmington Northern Railroad Co. 1879-1899; retired from active business and engaged in agricultural pursuits; elected on June 13, 1906, as a Republican to the United States Senate to fill the vacancy in the term beginning March 4, 1905, caused by the failure of the legislature to elect; reelected in 1911 and served from June 13, 1906, until March 3, 1917; unsuccessful candidate for reelection in 1916; chairman, Committee on Expenditures in the War Department (Sixty-first and Sixty-fourth Congresses), Committee on Military Affairs (Sixty-second Congress), Committee on Transportation and Sale of Meat Products (Sixty-third Congress); retired from public life and engaged in literary pursuits; died at Winterthur, near Wilmington, Del., December 31, 1926; interment in the du Pont Cemetery, Christiana Hundred, New Castle County, Del.

Hagley Museum and Library
Greenville, DE
Papers: 1843-1926. 76 linear feet. Correspondence, military papers, Wilmington Northern Railroad Company papers, genealogical papers, and correspondence of Mary Pauline du Pont. Correspondence reflects career as soldier, scholar, businessman, and political leader. Letters dating from Senate years are concerned with patronage, military affairs, and the reaction to war in Europe. Also photographs and portraits.
Additional Papers: In Lammot du Pont papers, 1850-1884; Louise du Pont Crowninshield papers, 1896-1958; Francis Gurney du Pont papers, 1818-1947; Hudson Maxim papers, 1889-1925; Henry du Pont papers, 1822-1899; Sophie Madeleine du Pont papers, 1818-1892; Wilmington and Kennett Turnpike Company records, 1811-1921; Pierre Samuel du Pont papers,1880-1954; Henry S. McComb diary, 1880, microfilm; and Henry Francis du Pont collection of the Winterthur manuscripts, 1588-1955.

Historical Society of Delaware
Wilmington, DE
Papers: 1900-1919. 6 items. Also photographs.

Winterthur Museum
Winterthur, DE
Papers: 1846-1926. Winterthur estate papers and portrait. Finding aid.

  • Ambrose, Stephen E., ed. "West Point in the Fifties: The Letters of Henry A. du Pont.'' Civil War History 10 (September 1964): 291-308.
  • du Pont, Henry Algernon. The Campaign of 1864 in the Valley of Virginia and the Expedition to Lynchburg. New York: National Americana Society, 1925.
  • ___. The Early Generations of the du Pont and Allied Families. 2 vols. New York: National Americana Society, 1923.
  • ___. Rear-Admiral Samuel Francis du Pont, United States Navy: A Biography. New York: National Americana Society, 1926.
  • ___. The Story of the Huguenots, as Contained in Two Addresses Made Before the Huguenot Societies of South Carolina and Pennsylvania. Cambridge: Riverside Press, 1920.
  • Johnson, William G. "The Senatorial Career of Henry Algernon du Pont.'' Delaware History 13 (April 1969): 234-51.
  • Lake, Virginia T., ed. "A Crisis of Conscience: West Point Letters of Henry A. du Pont, October 1860-June 1861.'' Civil War History 25 (March 1979): 55-65.
  • Mosley, Leonard. Blood Relations: The Rise Fall of the du Ponts of Delaware. New York: Atheneum, 1980.