Letter from John Peter De Lancey to John De Lancey, October 5, 1789
Letter from John De Lancey to James De Lancey, April 24, 1790
Letter from John De Lancey to John Peter De Lancey, May, 1791
Letter from John De Lancey to John Peter De Lancey, January 9, 1791
Letter from John De Lancey to his brother, James De Lancey, October 1, 1789
Letter from John De Lancey to Mary De Lancey Harris, March 17, 1791
Letter from John De Lancey to Oliver De Lancey, December 12,1790 and April 20, 1791
Letter from John De Lancey to James De Lancey, November 26, 1790
Letter from John De Lancey to John Peter De Lancey, July 2, 1808
Letter from John De Lancey to James De Lancey, April 12, 1791
Letter from John De Lancey to John Peter De Lancey, March 14, 1805
Letter from John De Lancey to Charlotte De Lancey, April 25, 1791
Letter from John De Lancey to James De Lancey, May 12, 1791
Letter from John Peter De Lancey to John De Lancey, September 22, 1786
Letter from John De Lancey to John Peter De Lancey, February 24, 1796
Letter from John De Lancey to Oliver De Lancey, May 24, 1791
Letter from John De Lancey to John Peter De Lancey, October, 1788
Letter from John De Lancey to John Peter De Lancey, October 5, 1788
Letter from John De Lancey to Oliver De Lancey, June 20, 1791
Copies of letters from John De Lancey to Oliver De Lancey, and to James De Lancey, December 16, 1791