Letter from William Heathcote De Lancey to Lord Ashburton, May 16, 1859

Letter from William Heathcote De Lancey, March 10, 1859

Letter from Elizabeth Herbert to William Heathcote De Lancey, March 9, 1859

Letter from James Fenimore Cooper to William Heathcote De Lancey, May 6, 1839

Letter from James Fenimore Cooper to William Heathcote De Lancey, October 6, 1838

Letter from James Fenimore Cooper to William Heathcote De Lancey, October 5, 1838

Letter from James Fenimore Cooper to William Heathcote De Lancey, September 8, 1838

Letter from Frances Munro De Lancey to Edward Floyd De Lancey, June 5, 1865

Letter from William Heathcote De Lancey to William Steuben De Zeng, March 24, 1847

Letter from William Heathcote De Lancey to Elizabeth Herbert, May 16, 1859

Letter from William Heathcote De Lancey to Edward Floyd De Lancey, September 5, 1861

Letter from William Heathcote De Lancey to Edward Floyd De Lancey, January 28, 1859

Letter from William Heathcote De Lancey to Edward Floyd De Lancey, January 7, 1850

Telegram from William Heathcote De Lancey to Edward Floyd De Lancey, November 15, 1858

Account of William Heathcote De Lancey, November, 1858

Letter from John De Lancey to John Peter De Lancey, March 14, 1796

Letter from William Heathcote De Lancey to Thomas J. De Lancey, January 5, 1848

Letter from Susan Augusta De Lancey Cooper to Anne Charlotte McAdam, January 26, 1833

Letter from William Heathcote De Lancey to Mordaunt Barnard, September 11, 1852

Letter from William Heathcote De Lancey to Anne Charlotte McAdam, November 19, 1836